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ThesisItem Open Access Studies on enhancement of shelf life of pointed gourd (Trichosanthes dioica Roxb.) by edible coating(Department of Agricultural Processing and Food Engineering, OUAT, Bhubaneswar, 2022) Pattnaik, Nishikanta; Mohapatra, Minati; Sahoo, Nihar Ranjan; Nayak, Raghabananda; Rayaguru, KalpanaPointed gourd (Trichosanthes dioica Roxb.), having nutritional and medicinal value has high demand in local and international market. But it has a very short shelf life of 1 to 2 days under ordinary storage condition. In the present study, attempt has been made to extend the shelf life of pointed gourd by edible coating method which is also an emerging preservation technology. Different edible coatings like sodium alginate (1.0%, 2.0%, 3.0%) chitosan (1.0%, 2.0%, 3.0%) and aloe vera gel were used to study the enhancement of shelf life of pointed gourd with respect to PLW, shrinkage, surface colour, chlorophyll & ascorbic acid content and texture. Effect of modified atmosphere packaging along with edible coating was also studied with PP bags and punnet trays with 1.0% and no perforation kept at ambient (28±20C) and low temperature (6±20C). Pointed gourds coated with 2.0% sodium alginate were observed with lowest PLW% (11.95±0.97%) and shrinkage% (20.05±1.51%), higher retention of total chlorophyll content (6.95±0.56 mg/g), higher ascorbic acid content (13.31±0.63 mg/100g), higher cutting (53.74±3.58N) and puncture force of & 11.77±0.75N. Aloe vera gel + 1.0% guar gum retained the similar quality parameters in terms of chlorophyll content, ascorbic acid and puncture force non-significantly different from the samples coated with 2.0% sodium alginate. Sensory evaluation of different coated samples stored at ambient temperature (28±20C) revealed that sodium alginate and aloe vera gel coating can enhance the shelf life up to 10 days. Whereas the control sample got unacceptable after 2 days of storage. Coated pointed gourds in PP bags could retain higher quality parameters than in punnet trays after 25 days of storage. Samples stored in PP bags with 1.0% perforation showed the best results in terms of chlorophyll retention (7.8±0.62 mg/g), ascorbic acid retention (13,65±0.43 mg/100g), cutting force (68.14±2.06N) and puncture force (13.07±1.31N). While observing PLW% (8.81±0.88%) and shrinkage% (13.88±0.86%) of the sample, it can also be concluded that PP bags could store the pointed gourd for more than 25 days. Pointed gourd coated with sodium alginate (2.0% solution) when kept inside PP bags with 1.0% perforation in low temperature (6±20C), it can be stored up to 25 days.ThesisItem Open Access Development and evaluation of a Power Tiller operated straw Chopper-Cum-Seeder(Department of Farm Machinery and Power Engineering, 2021) Koumary, Nitin Kumar; Goel, Aswini Kumar; Behera, D.; Mahapatra, M.; Ray, S.Odisha is an agricultural state and paddy is the main crop grown in the state. Paddy straw output in Odisha is over 124.99 lakh tonnes per year. In Odisha, 4025 combine harvesters are in operation at present and it is projected that 10.959 lakh tonnes of straw is discharged annually from these combine harvesters. Due to the operation of combine harvesters and the discharge of crop residues in the field during kharif paddy harvesting, as well as a lack of irrigation facilities, roughly 12.2 lakh ha of land in the state remained fallow and unable to produce next crops such as pulses andoil seeds. Farmers used to burn the straw residues in the combine harvested field and as a result a significant quantity of nutrient is lost as well as pollute the environment. Humans and animals are both affected by these pollutants. Insects, microbes, and earthworms that are beneficial to farmers are also killed by fire. Suitable machines for chopping straw residues in the field can allow farmers to grow pulses in combine harvested fields. Though tractor operated straw choppers and happy seeders are available, these are very costly and their operating cost is high. As the number of power tillers inthe state are about 1.0 lakh which is much more than the number of tractors, it was decided to develop a power tiller powered straw chopper-cum-seeder that would be beneficial to farmers. The power tiller operated straw chopper cum seeder with inverted “Y” shaped serrated blades was fabricated in the Dept. of Farm Machinery and Power, CAET, OUAT, Bhubaneswar. The field evaluation of the developed power tiller operated straw chopper cum seeder was conducted in OUAT Main Research Farm during the year 2021. The performance of the straw chopper cum seeder with respect to actual field capacity, size of chopped straw, percentage of straw size reduction and fuel consumption were measured at 3 levels of forward speed (1.41,1.61 and 2.05 km/h), 9 levels of rotor speed (700, 850, 1000,1150, 1300, 1450, 1600, 1750 and 1900rpm) and at 3 levels of straw moisture content (17.1,20.6 and 22.4%). It was found that as the moisture content of straw increased, the chopping size increased but the fuel consumption and the percentage of straw size reduction decreased. Highest straw size reduction of 83.69 % and lowest straw chopped size of 96.2 mm was obtained at 17.1 % straw moisture content with a forward speed of 1.61 km/h at a rotor speed of 1450 rpm. The loweststraw size reduction of 79.72 % and larger chopped straw size of 119.6 mm was obtained at 22.4 % straw moisture content with a forward speed of 1.41 km/h and rotor speed of 700 rpm. From this study it is concluded that higher straw moisture content is not suitable for straw chopper as it results lower percentage of straw reduction and larger size of chopped straw. It was observed that the rotor speed of 1450 rpm at a forward speed of 1.61 km/h with 17.1 % straw moisture content is most suitable for the chopper cum seeder. The cost of operation of the straw chopper cum seeder was found to be Rs 353/h and Rs 3153/haThesisItem Open Access Development and evaluation of a two row root wash type semi automatic rice Transplanter(Department of Farm Machinery and Power Engineering, 2021) Inthiyaz, Mitaie; Mishra, Jayanarayan; Behera, D.; Swain, S.K.; Barik, P. K.Rice is the most common staple food in India. It is grown throughout the country. In India about 43.80 million hectares of area is under rice cultivation. Manual transplanting is a drudgerious and more time consuming operation that requires about 100-140 man-h/acre. Manual transplanting requires frequent bending downward straightening up of body posture that causes higher discomfort and fatigue. Shortage of labour at peak time and demanding high wages are the main factors leading to mechanical transplanting. Timeliness of rice transplanting is also more important to maximize the yield which can be achieved only through mechanical transplanting. Apart from saving time and cost of operation mechanical transplanting avoids human drudgery and can give uniform plant density. Most of the mechanical transplanters available in market are uses mat type seedlings for transplanting. In India about 85% of farmers belongs to marginal and small category. Land area also become a problem to use mechanical rice transplanters. And also, mat type nursery requires special materials and extra time and labour for raising seedlings. Hence, farmers need a semi mechanised rice transplanters which uses traditional root washed seedlings. By considering the above limitations, in CAET a manual rice transplanter has been fabricated and evaluated which uses conventional root washed seedlings. But this existing rice transplanter required further modification in order to avoid simultaneous operations of cranking and pulling. Based on this constraints development and evaluation of a two-row root wash type semi-automatic rice transplanter was made. It was observed that the required draft was found to be 5.1 kg-f. The missing hills, floating hills, buried hills and damaged hills for existing hand cranking type rice transplanter were found to be 1.67, 1.33, 1.33 and 1.67 per cent respectively. In case of developed semi-automatic rice transplanter and 1.33, 1.33, 1.33 and 0.67 per cent respectively. The actual field capacity, theoretical field capacity and field efficiency of the developed semi-automatic rice transplanter was found to be 0.02 ha/h, 0.026 ha/h and 71.4 per cent respectively. The mean value of working heart rate was 130.46 (± 3.06) bpm. The corresponding average Oxygen consumption rate (OCR) was 0.73 (± 0.092) l/ min. The mean work pulse (∆HR) was 34.53 (± 3.3) bpm. The total cost of developed semi-automatic rice transplanter was found to be ₹ 32000.ThesisItem Open Access Design, development and performance evaluation of a power operated coconut Dehusker(Department of Farm Machinery and Power Engineering, 2021) R, Prajwal.; Pradhan, Padma Lochan; Behera, Debaraj; Sahoo, P. K.Coconuts are cultivated in more than 95 countries in the world. Coconut is made up of outer husk, middle shell and inner kernel. The husk of the coconut is removed for further use of mankind. Dehusking is the process of removal of outer part of coconut which is called husk. Dehusking can be done in many ways like traditional tools, improved tools, pedal operated, pneumatic operated, hydraulic operated and power operated. In traditional, improved tools and pedal operated one the drudgery is high and the chances of accidents are more. Pneumatic and hydraulic operated coconut dehusking machines are bulky, costly and cannot be afford by small and marginal farmers. Many power operated coconut dehuskers are there, but the developed power operated coconut dehusker in this research work is cheap, with less drudgery and can be afford by small and marginal farmers with moderate discomfort rate and considered as light work. In this study, physical properties of coconuts like length, breadth, thickness, thickness of husk, weight, moisture content, sphericity, roundness and dehusking force were studied and recorded. Based on these parameters a power operated coconut dehusker was designed and developed. The developed dehusker has the parts like dehusking blade, supporting stand, electric motor with gear reduction arrangement using pulleys and worm gears, crank wheel and connecting chain. The strokes at dehusking blade was 27 strokes per minute and this strokes/min were reduced from 1425 rpm at electric motor. The coconut is pierced at top of dehusking blade and the connecting chain drags the dehusking blades, so that removal of husk is done and finally by manually, husk is removed and nut is separated from husk. Performance evaluation is done by considering the total time of dehusking and found out the dehusking efficiency and output capacity of the dehusker. The dehusker can dehusk the coconut of random shape and size with different moisture content. The average dehusking time for developed power operated coconut dehusker was 13.34 seconds with dehusking efficiency and output capacity of 98.42 and 180-200 respectively. The developed power operated coconut dehusker was made comparative evaluation with manual method of coconut dehusking and found the total dehusking time per coconut was 34.95 seconds with dehusking efficiency and output capacity of 94.94 and 90-100 respectively. Ergonomical evaluation was made with different age group subjects and observed that the overall discomfort rate was moderate and the working is considered as light work as it consumes less oxygen during dehusking of coconut.ThesisItem Open Access Development and evalution of Pearl Millet thresher operated by Bullock power in rotary mode(Department of Farm Machinery and Power Engineering, 2021) Panda, Swetali; Swain, Sangram KeshariMillets are a group of cereal crops comprising of pearl millet, sorghum, finger millet, little millet, foxtail millet, barnyard millet and proso millet which are extensively cultivated by resource poor small and marginal farmers. Generally, pearl millet crop is harvested manually and transported to threshing yard, where it is threshed either by beating the crop manually with sticks or by foot trampling method which is exceedingly labor-intensive, tedious, uneconomical, and un hygienic; however, it also results in a significant quantity of grain loss during the threshing process. It was proposed to develop one pearl millet thresher, operated by a pair of bullocks in rotary mode. Furthermore, in order to reduce the financial burden of maintaining a pair of bullocks, the annual utilization hours need be enhanced by using the bullocks for post-harvest and agro-processing operations with matching gadgets using a rotary gear system. A study on moisture-related physical, engineering, and aerodynamic properties of pearl millet was conducted. It was observed that with an increase in moisture content, the geometrical mean diameter, arithmetic mean diameter, square mean diameter, and equivalent mean diameter increased from 1.39 to 1.65 mm, 1.65 to 1.98 mm, 2.59 to 2.98 mm and 1.73 to 1.98 mm, respectively. The coefficient friction for glass, mild steel surface, GI sheet, and plywood increased linearly from 0.365 to 0.398, 0.402 to 0.414, 0.396 to 0.412, and 0.339 to 0.357, respectively with an increase in moisture content. The angle of repose, terminal velocity, aspect ratio, sphericity, surface area, volume, and 1000 grain weight were increased from 23.420 to 25.600, 4.42 to 4.62 ms-1 , 0.353 to 0.386%, 0.682 to 0.699%, 6.60 to 8.55 mm2 , 2.69 to 4.56 mm3 and 2.91 to 3.13 g, whereas bulk density, true density and porosity decreased from 608.68 to 611.78 kg m-3 , 967.53 to 968.93 kg m-3 and 0.398 to 0.354 % within the said moisture content range. The basic considerations for the development of a pearl millet thresher were taken into account and the conceptual model of the pearl millet thresher was developed using SOLIDWORKS 2019 software. The principle of threshing and pearling actions were impact and shear by a series of stud type and knife type threshing elements which were fitted alternatively on the surface of the threshing cylinder. A feed-in type pearl millet thresher having a threshing cylinder, an oscillating screen, a blower, and one aspirator was developed. The output of the machine was found to be 31.58 kg h-1 and was dependent significantly on the three independents parameters i.e. moisture content, concave clearance, and threshing cylinder speed. The threshing efficiency was found to be 95.05 percent and increased directly with an increase in cylinder speed but decreased with an increase in concave clearance and moisture content of the ear head. Similarly, the cleaning efficiency was found to be 97.65 percent whereas the cleaning efficiency decreased with an increase in concave clearance. Grain breakage was higher when the peripheral speed was higher, the concave clearance was smaller, and the moisture content was lower. The percentage of breakage was found to be 0.68%. The machine operational parameters, i.e., cylinder speed, concave clearance, and moisture content, were optimized to achieve optimum output capacity, threshing efficiency, cleaning efficiency, and grain damage. The Response Surface Method (RSM) was used in conjunction with the Box–Behnken Design tool to do the analysis. The optimum operational parameters were found to be cylinder speed of 720 rpm, concave clearance of 12mm and moisture content of 9.1%, which predict the maximum output capacity, threshing efficiency, cleaning efficiency, and broken grain ratio of 32.14 kgh-1 , 95.78%, 98.60%, and 0.812% respectively. The total operating cost of the machine operated in rotary mode was calculated as Rs 186.55 h-1 and the operating cost for threshing was calculated as Rs 5.82 kg-1 . When operated with the help of a single phase 1 hp electric motor, the total operating cost of the machine was calculated as Rs 98.71h-1 and Rs 3.08 kg-1 of pearl millet grain. In the conventional hand beating method, the cost of threshing was calculated to be Rs 12.49 kg-1 which is costlier as compared to the cost of threshing operation by the developed pearl millet thresher, operated either by bullock power in rotary mode or by 1.0 hp single phase electric motor. Considering the results of performance evaluation of the developed pearl millet thresher cum cleaner operated by bullock power in rotary mode with respect to the independent parameters and its economics of use, the developed pearl millet thresher cum cleaner is found suitable for the small and marginal millet growers of the state to accomplish threshing and winnowing operations simultaneously with reduction in labour, time, cost and drudgery of working.ThesisItem Open Access Performance and combustion studies of a tractor engine with waste cooking oil based biodiesel blends(Department of Farm Machinery and Power Engineering, 2021) Giri, Biswa Ranjan; Sahoo, Pradeepta Kumar; Behera, D.; Mohanty, M.K.The first CI engine was operated with a vegetable oil in the 1890s when it became a revolution for the transportation sector of the world, but lately due to high viscosity of vegetable oil and frequent engine problems people started searching for alternative fuel which ended after the discovery of petroleum products which was light as compared to that of vegetable oil and seemed perfect until the crisis in the middle east during 1970s which caused disruption in the oil supply due to which the prices of fuel skyrocketed. After that again the search for alternative fuel started and now the advanced transesterified oil has drawn the interest of everyone. After that the focus of people has drifted to the environmental changes caused by the pollution emitted from the fossil fuel, rising oil prices and rapid depletion of petroleum has caused a serious concern over the future, so we have started exploring the development in the field of vegetable oil to make it suitable to use it in the CI engine. The transesterified vegetable oil was suitable to be used in a CI engine, but the only concern was price. So many options were explored to minimize the prices for the vegetable oil, using of transesterified waste cooking oil to make biodiesel is one of them. And also now a days the energy security is the affair which is given the prime importance by each and every country in the world, so we also want to be self-sufficient in our energy needs, for which we have started looking for the alternative renewable sources like wind energy, solar energy, hydro energy, bioenergy etc. but all most all the alternative sources have their limitation like for wind energy wind is not uniform everywhere for solar energy the semiconductor material is not available which is used for making solar cells, for hydro power water scarcity is one of the main problem so here the bio energy is the energy in which we can rely on for our uninterrupted energy supply in future as we can produce as much biomass as we want to fulfil our requirements. The objective of this study was to develop a test rig where we can study different parameters of the biodiesel to check its feasibility as a fuel. Then we have studied about the behaviour of the fuel inside the engine cylinder by analysing the performance and combustion parameters of the fuel. Then we have done the comparative analysis, and according to the analysis we have given our verdict for the suitability of the fuel to be used as fuel. In this study firstly we have collected waste cooking oil from the mess of hostel 5 of OUAT and then transesterified to make biodiesel. Then different physic chemical properties of the fuel blends were determined and compared with each other. After that the biodiesel was blended with diesel as per our requirement (10%, 20%, and 30%) and then by using this biodiesel-diesel blend in the setup the performance and combustion studies were started. The setup was a MITSUBISHI Shakti 180D mini tractor in which different sensors were used for acquiring the performance and combustion data. Then the data were studied to optimise the blends, The performance results which we have taken at different engine loads of (25%, 50%, 75% and 100%) showed that the brake power decreased up to 9% as the fuel blends increased whereas fuel blends and brake thermal efficiency showed an inverse relation. The specific fuel consumption was found to be increasing by 7-10% for all the blends with every applied load. Another important aspect of the performance study is the study of hand arm vibration from the steering wheel of the tractor which resulted in the highest vibration for the unblended neat diesel whereas it showed an increase as the fuel blends were increased from B10 to B30. The combustion results showed an increase in the cylinder pressure as well as the heat release rate irrespective of the load. In the emission study a spike in NOx emission was found with respect to the blend percentage, whereas for CO, CO2 and HC a proportional relation was found. From this study it was found that B10 and B20 blends were suitable for the engine as their properties were similar to that of the neat diesel, also all the properties of the biodiesel was found to be within the limits of ASTM standards. Biodiesel is an appropriate inherent source for alternative fuel carrying one of the main causes called self-sufficiency in the energy sector which will definitely drive all the governments across the world to adopt this fuel in the future with its added environmental benefits it can be a check mate for the energy sector.ThesisItem Open Access Development and evaluation of hybrid concentrating Photovoltaic/Thermal (CPVT) system for Greenhouse drying(Department of Farm Machinery and Power Engineering, 2021) Sahu, Birupakshya; Ghosal, Manoj Kumar; Behera, Debaraj; Ray, SubhrajitSolar energy is considered to be a clean and sustainable source of energy particularly utilizing it in the way of generating photovoltaic (PV) electricity. Solar energy is now gaining importance worldwide in reducing the reliance on fossil fuels by installing PV power plants both in smaller and larger scale. Research and development is going on, to develop more efficient solar energy devices to harness and utilize solar energy in a wider scale. More attention has also been given on enhancing the efficiency of solar photovoltaic panel. The controllable approaches for increasing the efficiency of solar panel is to increase the incidence of solar radiation on it and to decrease its operating temperatures to a permissible level, mostly nearer to the temperature specified as per the standard test conditions. More is the incidence of radiation; more is the increase of temperature in the panel. The rising temperatures in the panel beyond the standard test conditions need to be reduced by incorporating various cooling devices for improving its electrical efficiency. The use of cooling devices reduces the operating temperatures of the panel by extracting the absorbed heat energy at its back surface. The extracted heat energy by the way, is utilized for low energy consuming applications such as greenhouse heating, water heating, crop drying and thermo-electric power generation etc. Such type of system is therefore called as a hybrid system due to the dual advantages of improving electrical efficiency of the panel and utilizing unused thermal energy in a productive and sustainable manner. The present study therefore focuses on the enhancement of the efficiency of solar panel by incorporating plane reflectors at its both sides and cooling the back surface with the flow of air through forced circulation mode by a DC powered fan and drying of high-value medicinal plant i.e. shatavari roots with the entry of extracted heat energy to the greenhouse integrated with the developed hybrid system. The developed system is hence known as Hybrid Concentrating Photovoltaic/Thermal (HCPV/T) solar greenhouse system. Greenhouse is integrated with the experimental set up for effective and rapid drying of the fresh shatavari roots. The performance of hybrid CPV/T solar greenhouse dryer is evaluated and compared with greenhouse system only and open sun drying method. Air is used in this study to extract the heat from the back surface of the solar panel. The performance of the whole system is evaluated with respect to electrical efficiency of solar panel and drying characteristics of the product. Open sun drying, in which the product is spread on the ground in open condition, is the simplest and cheapest method of drying. But there are considerable losses associated with it. So, an improved method of drying i.e. hybrid concentrating photovoltaic thermal (HCPV/T) greenhouse drying has been followed in this study for efficient drying and improving the quality of the product. The effects of PV panel orientation and air flowing channel on the electrical efficiency and thermal as well as drying efficiencies of the developed system have also been discussed. From the experimental findings, it was revealed that the temperatures of solar panel were decreased in the range of 9-12 ˚C in forced air cooling compared to without cooling in a clear day. The efficiencies of solar panel were increased in the range of 8-11 % and the costs of generation of unit electricity from the hybrid CPV/T system with and without air cooling are respectively Rs. 13.00 and Rs.20.00 per kWh. The drying hours to reduce moisture content of fresh satavari root (initial moisture content in the range of 80-85 %) to about 10 % (wb) are respectively 20, 26 and 30 in hybrid CPV/T greenhouse dryer, greenhouse dryer alone and open sun drying method. The food values (antioxidant and phenolic content) of dried satavari roots are maintained in hybrid CPV/T greenhouse dryer, almost same as the fresh root for long term preservation, marketing and earning income due to high medicinal and health benefits. The payback period of hybrid CPV/T greenhouse dryer is only 7 months. The payback periods of greenhouse dryer and open sun drying for shatavari root are respectively 1.5 months and 1 month only due to less initial investment and negligible maintenance.ThesisItem Open Access Development of a Power Tiller operated Groundnut Digger(Department of Farm Machinery and Power Engineering, 2021) Satapathy, Ardhendu Sekhar; Mohanty, Santosh Kumar; Behera, D.; Pradhan, P.L.; Ray, S.Groundnut is an upright or prostrate annual plant. It is generally distributed in the tropical, sub-tropical and warm temperate zones. India is the largest producer of oilseeds in the world and this sector occupies an important position in the agricultural economy of the country. Oilseeds are among the major crops that are grown in the country apart from cereals. The state of Odisha is sixth in India in terms of groundnut production. Different Groundnut varieties grown in Odisha are Kissan, Jawan, Smruti, Devi, ICGS-44, Phule, Kadri, AK 12-24, out of which Devi variety is shown in most of the region in Odisha. The harvesting of groundnut is done by manually, using hand tools by adopting sitting, bending and squatting posture. The power tiller population in Odisha is very high with an annual sale of 13000 units. Digger can be an attachment to a power tiller to improve its annual use and reduce the time required for digging operation to 0.1 ha/h against 0.01ha/h in manual digging. As the availability of power tiller in Odisha is high and the cost of operation is lower than that of the manual digging operation, it may be accepted by the farming community. The power tiller operated groundnut digger was developed and tested in OUAT groundnut field and found different results as digging efficiency, soil separation efficiency, conveying efficiency, digging losses, draft, effective field capacity, theoretical field capacity and field efficiency etc. The vibration during the operation was measured and the effect due to vibration was also studied. The effective combination of digging operation is at 10.5 per cent moisture content and 2 km/h speed of operation with less digging loss and fuel consumption. Maximum digging efficiency was found as 97.9 per cent at1.5 km/h and 10.5 per cent soil moisture content. The high RMS acceleration at the handle of power tiller was at low frequency and decreased with the increase in frequency. With the increase of speed of operation also the vibration increased. The cost of manual harvesting was Rs.6200 per ha at the prevailing wage rate of Rs.310.00 per labour per day. The cost of harvesting with the prototype unit was Rs. 5000 ha-1. The saving in cost and time were 19.3 and 97.9 per cent respectively as compared to conventional method of manual harvesting. The break-even point and pay back period of the power tiller operated groundnut digger were estimated as 9.7 ha per year and 3.1 years respectively.ThesisItem Open Access Studies on preparation of Gluten free functional pasta(Department of Processing and Food Engineering, OUAT, Bhubaneswar, 2021) Sahu, Homendra kumar; Rayaguru, Kalpana; Sahoo, Nihar Ranjan; Panda, Manoj Kumar; Nayak, RaghabanandaA gluten-free diet is essential for curing celiac disease as well as other gluten-related medical problems. In order to prepare the gluten free pasta, refined wheat flour (Maida) was substituted by rice flour having no gluten content. Since the objective was to make functional pasta chickpea (plant protein) was added in different proportion with rice flour (90:10, 80:20 and 70:30) to enrich it with protein. There combination of ingredient was further added with mango peel powder to incorporate phytonutrients to the pasta at level of (0, 5 and 10%). Since this combination of pasta ingredients were devoid of gluten, there was an essential requirement of binding agent to be added for formation of pasta. Therefore, guar gum a galactomannan polysaccharide obtained by fine grinding of guar bean was used as binding agent (2.5 to 4.5%). All the pasta samples were subjected to proximate analysis (moisture content, crude protein, ash), functional properties (optimum cooking time, cooking loss, WAI, WSI), textural properties (textue, colour) sensory analysis and phytochemical analysis for standardizing the proportion of ingredient for pasta sample. The gluten content of this commercial pasta was found to be 7.50% whereas the rest of samples possessed no gluten at all. Among gluten free pasta samples, with increase in chickpea proportion and with increase in guar gum proportion, cooking time (OCT) increased and cooking loss (CL) decreased. On the contrary, it was also observed that with increase in mango peel proportion, cooking loss increased. The overall acceptability of gluten free pasta was better than control pasta because of addition of chickpea flour and mango peel powder. Overall analysis of functional, phytochemical, nutritional and sensory properties, it is recommended to prepare gluten free pasta with an ingredient proportion of the rice flour 80%, chickpea flour 20%, mango peel powder 10% and guar gum 4.5% in order to obtained protein rich functional pasta with all phytonutrients other desirable qualities. This sample was found to possess 11.36±0.42% protein content, 1.04±0.01% ash content, 154.17±2.42 mgGAE/100g total phenolic content, 72.53±0.84% radical scavenging activity and fetches the higher sensory score of 8.33±0.65. However, in absence of mango peel powder, rice flour 80%, chickpea flour 20% and guar gum 3.5% can also be produced for commercial application. A protein enriched pasta variant Rice flour 70%, chickpea flour 30%, mango peel powder 5% and guar gum 2.5% can also be prepared with slight compromise on solid loss.
