Loading...
Thumbnail Image

Govind Ballabh Pant University of Agriculture and Technology, Pantnagar

After independence, development of the rural sector was considered the primary concern of the Government of India. In 1949, with the appointment of the Radhakrishnan University Education Commission, imparting of agricultural education through the setting up of rural universities became the focal point. Later, in 1954 an Indo-American team led by Dr. K.R. Damle, the Vice-President of ICAR, was constituted that arrived at the idea of establishing a Rural University on the land-grant pattern of USA. As a consequence a contract between the Government of India, the Technical Cooperation Mission and some land-grant universities of USA, was signed to promote agricultural education in the country. The US universities included the universities of Tennessee, the Ohio State University, the Kansas State University, The University of Illinois, the Pennsylvania State University and the University of Missouri. The task of assisting Uttar Pradesh in establishing an agricultural university was assigned to the University of Illinois which signed a contract in 1959 to establish an agricultural University in the State. Dean, H.W. Hannah, of the University of Illinois prepared a blueprint for a Rural University to be set up at the Tarai State Farm in the district Nainital, UP. In the initial stage the University of Illinois also offered the services of its scientists and teachers. Thus, in 1960, the first agricultural university of India, UP Agricultural University, came into being by an Act of legislation, UP Act XI-V of 1958. The Act was later amended under UP Universities Re-enactment and Amendment Act 1972 and the University was rechristened as Govind Ballabh Pant University of Agriculture and Technology keeping in view the contributions of Pt. Govind Ballabh Pant, the then Chief Minister of UP. The University was dedicated to the Nation by the first Prime Minister of India Pt Jawaharlal Nehru on 17 November 1960. The G.B. Pant University is a symbol of successful partnership between India and the United States. The establishment of this university brought about a revolution in agricultural education, research and extension. It paved the way for setting up of 31 other agricultural universities in the country.

Browse

Search Results

Now showing 1 - 9 of 16
  • ThesisItemOpen Access
    Microbial and electrical characterization of polyindole/hemoglobin composites
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-10) Rawat, Shristi; Mehtab, Sameena
    CPs and conjugate polymers composites have many important applications as supercapacitors, sensing materials, fuel cells, solar cells, batteries etc. In this direction, in present studies we developed WEs by the coating of PIN/Hb. Three types of PIN/Hb composites C-I, C-II and C-III with varying concentrations (100 mg, 200 mg and 300 mg) of Hb were mixed with selected and optimized binder (SPS) and filler (Gr). A homogenous slurry of all components were prepared in NMP solvent and manually spread over SS to develop coated WEs. The WEs obtained were further used for electrical characterization over Keithley four-probe DC conductivity meter. At variable voltage, I-V graph of PIN and its composites obtained were in linear relation that reflects Ohmic behaviour of composites. Conductivity data of examined WEs reveals that, at RT (25oC±1), all composites exhibits higher conductivity than PIN and it further increases with increase in concentration of Hb in composites at all examined voltages (1, 10 and 100 V). It was found that conductivities for all WEs were constant at 1 and 10 V and maximum at 100 V. Further C-III reflected highest value of conductivity 0.1 × 10-2 Scm-1 at 100 V. Conductivity examinations of WEs at variable temperature ranging from 25-125oC showed maximum conductivity (0.16 × 10-2 Scm-1) of C-III at 75oC. It was found that the conductivity of WEs increased up to 75oC and then it decreased and became constant after 100oC. WEs were baked at temperature range of 50-100oC in oven and their conductivities were measured over the time duration of 3-9 hr. The highest conductivities for all WEs were obtained at 50oC with baking over 3 hr, while C-III showed maximum conductivity (0.51 × 10-2 Scm-1) at similar baking condition. Baking examinations at 50oC over time, reflected that conductivities increases up to 3 hr, then there was a gradual decrease till 6 hr, after that it remained constant up to 9 hr for all WEs. Similar baking trends of conductivities were observed at 100oC for same time parameters. These changes in conductivity of WEs with temperature and baking over time, might be due to change in surface morphology, cracking and delamination of coating materials over SS at higher temperatures and extended time period. As per literature PIN was found to exhibit antifungal activities, but in our studies C-I, C-II and C-III, did not display any antifungal activities against three tested fungus Penicillium chrysogenum, Aspergillus niger, Trichoderma asperellum. Even it was observed that there is enhancement in the growth of fungus with C-I, C-II and C-III exposure that may be due to carbon source of PIN and Fe in Hb from composites that act as fungal growth promoters. Present investigation provides a simplified way of optimization and fabrication of WEs with enhanced electrical conductivities at variable temperature range and baking conditions and data reveals that C- III can be used in electrochemical energy storage devices.
  • ThesisItemOpen Access
    Studies on physical and antimicrobial characteristics of polypyrrole/hemoglobin composites
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-10) Holaria, Pooja; Mehtab, Sameena
    A series of electrodes were prepared for PPY (PPy) and it’s composites with Hb (PHC-1, PHC-2, PHC-3). Electrodes were fabricated using two different binder and solvent combination over stainless steel surface. PVB and THF combination showed best surface morphology. Conductivity for electrodes was measured at room temperature using four probe method, PHC-3 shows the best conductivity result at room temperature. For optimization of electrode different PVB concentration (8 mg, 15 mg, 35 mg, 75 mg) were used in PHC-3. 35 mg PVB in PHC-3 shows the best result for conductivity at room temperature, therefore working electrodes for PPy, PHC-1, PHC-2 and PHC-3 were prepared with 35 mg binder concentration. All prepared electrodes were further tested for physical characterization. Electrodes were kept under humid environment for 8 hrs and were found to be morphologically stable. With increase in amount of Hb in PPy, increase in conductance was observed, PHC-3 shows the best results for conductance. For different PVB concentration conductance increases up to 35 mg PVB in PHC-3 and then decreases with further increase in binder amount. A sharp rise in σDC of WEs was observed at 100 V in each case that attributes to their behaviour as intrinsic semiconductors. All PHCs show linear I/V characterization and their electrical conductivity increases with Hb concentration and applied voltage. Effect of binder on I-V also shows linear variation and conductivity increase with increase in PVB up to 35 mg and then decrease with further increase in PVB amount. However, a sharp rise in σDC of WEs was observed at 100 V that attributes to their behaviour as intrinsic semiconductor. PHCs of concentration 1 mg/mL, 1.5mg/mL and 2 mg/mL were tested against 3 fungi A. niger, P. chrysogenum and T. asperellum, composites show no inhibition capability at tested concentration.
  • ThesisItemOpen Access
    Seasonal variation in chemical composition and biological activities of essential oils from leaves of Skimmia anquetilia N.P. Taylor and Airy Shaw
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-10) Arya, Stuti; Om Prakash
    The aim of the current investigation was to analyze the chemical composition and biological activities of the essential oil from the aerial part of Skimmia anquetilia (N.P Taylor and Airy Shaw). The plant material was collected was from Harinagar, District Nainital, Dhari, Uttarakhand India, situated at an altitude of 2100m. during the month of September 2020 and January 2021. The essential oil were extracted by hydro-distillation method using Clevenger type apparatus and were designated as SKREO (Skimmia anquetilia rainy essential oil) and SKWEO (Skimmia anquetilia rainy essential oil) rescpectively. The yield of SKREO & SKWEO were 0.70% and 0.60% respectively by v/w. The essential oils were analysed for phytochemical composition and biological activity viz, antioxidant, anti-inflammatory, antidiabetic, antifeedant and nematicidal activity. GC and GC/MS analysis of SKREO & SKWEO was done for qualitative and quantitative analysis viz: linalyl acetate (15.8% -17.6%), linalool (13.2%- 13.9%), geijeren (11.6%- 11.7%), thujene (11.3%- 11.1%), α-terpineol (6.1%- 6.1%), geranyl acetate (5.0%- 5.1%), α–terpinyl acetate (3.3%- 3.1), myrcene (3.0%- 3.1%), geraniol (2.6%- 1.9%), α-pinene (2.1%- 2.2%), transβ- ocimene (2.1%- 2.3%), cis-β-ocimene (2.0%- 2.2%), neryl acetate (2.3%- 2.4%), sabinene (1.4%-1.5%), α- elemol (1.8%- 1.3%), epi- α -elemol (1.9%- 1.6%), 3- farnesyl acetate (1.7%- 2.4%) respectively. In terms of quality many constituents identified in SKREO were minor in SKWEO and viceversa. The in vitro antioxidant activity of SKREO & SKWEO was conducted by means of DPPH radical scavenging, H2O2 radical scavenging and metal chelating activity taking BHT and Na2 EDTA as the antioxidant standard respectively. SKREO showed higher DPPH radical scavenging potential (IC50=36.91±0.397) than SKWEO (IC50=41.31±0.561). In H2O2 radical scavenging assay SKREO showed great activity while in metal chelating activity SKREO showed better antioxidant potential than SKWEO. The in vitro anti-inflammatory activity was conducted using protein denaturation assay taking standard dichlofenac sodium as an anti-inflammatory drug. SKWEO (IC50=43.77±0.346) showed strong in vitro anti-inflammatory activity than SKREO (IC50=47.83±0.104). The antidiabetic activity of SKREO & SKWEO was performed using α-amylase inhibition assay by taking standard antidiabetic drug acarbose. SKREO (IC50=38.210±.030) showed better antidiabetic activity than that of SKWEO (IC50=52.06± 0.045 μl/mL). Antifeedant activity of both SKREO & SKWEO was performed against Spodoptera litura insect and the observation showed both SKREO (74.06%) and SKWEO (91.67 %) were observed to exhibited potent antifeeding activity at dose dependent manner. The nematicidal mobility activity of SKREO & SKWEO was performed against Meloidogyne incognita. The results revealed that SKREO was found to be most effective with 48.66% and 47.41% in SKWEO. SKREO gave minimum inhibition of egg hatching with 6.43% as compared to SKWEO 11.27%. The shrub S.anquetilia can be good source of phytochemicals like linalyl acetate, linalool, geijeren, thujene and herbal source for antioxidant, antiinflammatory, antidiabetic, antifeedant and nematicidal activity after proper clinical trials, besides its academic importance.
  • ThesisItemOpen Access
    Thermal and antimicrobial characterization of lac
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-09) Bhoj, Megha; Zaidi, M.G.H.
    Present study demonstrates the thermal and antimicrobial characterizations of Lac along with spectra and DC conductivity. Study reveals intact thermal stability of Lac irrespective to rate of heating. Lac was thermally degraded in single step at 10oCmin-1 with TG onset at 300oC.This was left with 8.28% residue. Degradation of Lac was concluded TG end set at 500oC leaving 8.83% residue. Thermo gram of Lac decomposed @ 20oCmin-1 thermo gram reveals not much significant shift in TG onset and TG end set temperatures. This attributes thermally stable nature of Lac irrespective to increasing heat of degradation. FT-IR spectra of Lac reveals the presence of characteristic functionalities supported with literature. σDC of Lac pellets was studied at three different voltages in the range of 1 to 100V at room temperature. σDC measurements revels increase in conductivity of Lac with voltage is 2.5 × 10-2 Scm-1. Lac did not exhibit any zone of inhibition against three test fungi : Aspergillus niger, Trichoderma asperellum, Penicillium chrysogenum at various concentrations using both the disc and well diffusion methods.
  • ThesisItemOpen Access
    Seasonal variation in chemical composition and biological activities of essential oils from Artemisia annua L.
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-10) Malhotra, Akanksha; Om Prakash
    The objectives of the present research study were to investigate the seasonal variation in phytochemical analysis and biological activites of Artemisia annua essential oils. The plants were collected from Tarai region of Uttarakhand, Pantnagar in the month of September, 2020 and January 2021 respectively .The essential oils of fresh aerial part of the collected plant materials were extracted by hydrodistillation using Clevenger apparatus and were studied by GC/MS for its phytochemical study and various biological activities. The essential oils isolated in rainy and winter season were designated as AAREO & AAWEO respectively. The phytochemical analysis of AAREO revealed the identification of 75 constituents which contributed 91.7% of the total essential oil. The major components of AAREO were camphor (14.1%) followed by germacrene –D (9.0%), trans-β-caryophyllene (8.7%), eucalyptol (4.2%), cis-cadin-4en-7-ol (3.9%), isoborneol (3.2%), p-cymene (2.9%) etc. Similarly, in AAWEO 59 constituents were identified which contributed 94.1% of the total essential oil. The major components of AAWEO were camphor (17.9%) followed by eucalyptol (14.6%), (E,E)-2,6-dimethyl-3,5,7-octatrien-2-ol (6.3%), (5E)-2,6-dimethyl-1,5,7-octatrien-3-ol (5.2%), artemisia alcohol (3.5%), isoborneol (3.2%), caryophyllene oxide (3.1%), artemisia ketone (2.5%) etc besides other minor and trace constituents. Both AAREO & AAWEO showed qualitative and quantitative differences in their phytochemical makeup. Both AAREO and AAWEO exhibited dose dependent in-vitro anti-oxidant activity, evaluated by , DPPH scavenging, metal chelating assay and H2O2 radical scavenging as indicated by different IC50 values. IC50 =77.87±0.528 to IC50=45.588±0.334 μl/mL for DPPH radical scavenging activity similarly IC50 =51.40±0.158 to IC50=49.50±0.234 for metal chelating activity and IC50 = 44.83±1.304 to IC50 =34.79±0.419 for H2O2 radical scavenging activity with respect to various standards like, BHT and Na2EDTA respectively. With respect to diclofenac sodium, the standard anti-inflammatory drug both AAREO and AAWEO exhibited anti-inflammatory activity with IC50= AAWEO (IC50=66.90±0.040) > AAREO (IC50=76.55±0.218) μl/mL respectively. Similarly, significant anti-diabetic activity was observed in both AAREO and AAWEO with IC50= 74.26±3.706μl/mL to IC50= 47.45±0.195μl/mL, respectively compared to standard acarbose (IC50= 38.21±0.03μl/mL). Both AAREO and AAWEO were observed to exhibit strong anti-feedant activity respectively against Spodoptera litura (90.85% & 87.92%) .Like wise AAREO & AAWEO were subjected to nematicidal activity against root knot nematode, Meloidogyne incognita. It was observed that AAREO exhibited more mortality over AAWEO at different concentration ( 1-5 μl/mL) , where as in the case of egg inhibition process AAWEO was found to be more effective (5.38% egg hatching) than AAREO (11.41% egg hatching)at a concentration of 10 μl/mL respectively. Based on observations of above mentioned study, it can be inferred that Artemisia annua can be a good natural resource of camphor and 1,8 cineole and the essential oils can be good source of antioxidant, anti-inflammatory, anti-diabetic, anti-feedant and nematicidal activities after proper clinical trials.
  • ThesisItemOpen Access
    Thymus linearis Benth.: Study on essential oil composition with seasonal variation and biological activities
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2021-09) Kabdal, Tanuja; Ravendra Kumar
    The present study was aimed to analyse the phytochemical nature and to evaluate the biological activities of the essential oil of Thymus linearis Benth. collected in two different seasons. The plant material was collected from the Kumaun region of Uttarakhand in rainy season (TLRO) and winter season (TLWO). The oil from the plant material was extracted by hydro distillation using Clevenger type of apparatus and the yield obtained was 1.3% and 1% respectively. The phytochemical analysis of the oils was done by GC and GC/MS. The major component in both the oils was thymol with varying percent composition, i.e., 31.9% in TLRO and 35.7% in TLWO. The other major components in TLRO were γ-terpinene (12.5%) and p-cymene (10.6%) while in TLWO the other major components were p-cymene (12.9%) and borneol (6.1%). The different biological activities of essential oils were performed using standard protocols. In in vitro antiinflammatory activity performed using denaturation of egg albumin protein, TLWO (IC50=26.55±0.03) showed more potent effect. The antioxidant activity as evaluated using three different methods which were DPPH radical scavenging activity, H2O2 radical scavenging activity and metal chelating activity and tested good activity for TLWO compared to TLRO. The antidiabetic activity of oils was analyzed using α-amylase inhibition assay. TLWO showed better inhibition of the enzyme showing its more antidiabetic potential with IC50 value 32.27±0.05. Insect antifeedant activity was performed using leaf dip method against the test insect Spodoptera litura. Significant activity was shown by both the oils but more potent activity was shown by TLWO. The nematicidal activity tested against Meloidogyne incognita demonstrated higher mortality in case of TLWO than TLRO. TLWO also showed more inhibition of hatching of the eggs of Meloidogyne incognita.
  • ThesisItemOpen Access
    Study on phytochemical composition and biological activities of Ocimum gratissimum (clove basil, shrubby basil) and Ocimum sanctum (holy basil, tulsi)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Tomar, Himanshi; Om Prakash
    The objectives of the present research work were to investigate the phytochemical analysis and biological activites of Ocimum gratissimum and Ocimum sanctum essential oils. The plants were collected from different regions of Kumaon (Pantnagar, Jawaharnagar), Uttarakhand in the month of August and September, 2019. The essential oils of fresh aerial part of the collected plant materials were extracted by using Clevenger apparatus. The essential oils of O. Gratissimum (OGEO) and O. sanctum (OSEO) were analysed by GC and GC-MS method. The phytochemical analysis of OGEO revealed the occurrence of over 28 compounds out of which 26 constituents were identified which contributed 96.5% of the total essential oil. The major components of OGEO were eugenol (74.8%), cis-caryophyllene (8.0%), γ-muurolene (3.0%), γ-cadinene (2.0%), β- caryophyllene oxide (2.0%). Similarly, in OSEO 25 constituents were identified which contributed 96.4% of the total essential oil. The major components of OSEO were eugenol (54.0%), cis- caryophyllene (15.1%), β-elemene (12.0%), germacrene-A (6.5%), β-caryophyllene oxide (2.4%), neo-intermedol (2.1%), α-humulene (1.4%) besides other minor cconstituents. Both OGEO and OSEO exhibited dose dependent in-vitro anti-oxidant activity, evaluated by reducing power, DPPH scavenging and metal chelating assay, as indicated by different IC50 values ranging from RP50 =36.59±0.14μl/mL to RP50=46.24±1.49 μl/mL for reducing power activity, IC50 =95.69±0.99μl/mL to IC50= 115.30±0.29μl/mL for radical scavenging activity and IC50= 17.83±0.17μl/mL to IC50= 82.54±0.36μl/mL for metal chelating activity, with respect to various standards like ascorbic acid, BHT, EDTA, respectively. For anti-fungal activity against Rhizoctonia solani, both OGEO and OSEO exhibited strong anti-fungal activity by inhibiting the mycelial growth up to 100% as a function of concentration. Both the oils were observed to exhibit strong anti-feedant activity (90%) against Spilosoma obliqua, the major pest of soya bean (Glycine max) and broad leaf crops. With respect to diclofenac sodium, the standard anti-inflammatory drug both OGEO and OSEO exhibited moderate anti-inflammatory activity with IB50= 52.10±0.14μl/mL and IB50= 39.83±0.32μl/mL, respectively. Similarly, good anti-diabetic activity was observed in both OGEO and OSEO with IB50= 98.54±0.04μl/mL and IB50= 96.14±0.57μl/mL, respectively compared to acarbose (IB50= 86±0μl/mL). Based on these observations, it can be inferred that OGEO and OSEO can be a good natural resource of eugenol and various biological activities after proper clinical trials.
  • ThesisItemOpen Access
    Removal of heavy metals cadmium (Cd) and copper (Cu) from waste water solution using Bauhinia variegata l. (Kachnar) leaves biomass
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Bisht, Saurabh; Kasana, Virendra
    Industrialization and urbanization has caused various threats to environment and heavy metal pollution is one of them. In recent times Cd and Cu pollution has drawn great attention towards itself due to their availability and toxicity in water. The aim of present study is to determine bioadsorption capacity of leaves of Bauhinia variegata collected from plains of Uttarakhand. Today many industries face the problem of removal of heavy metals. Plant leaves waste can be used abundantly as adsorbent for the removal of heavy metals from aqueous solution. Leaves contain chlorophyll, anthocyanin, tannin and other compounds which are responsible for the metal biosorption. The leaves of Bauhinia variegata contains alkaloids, flavonoids, sugars, steroids and saponins which act as binding sites for the metal adsorption. The bioadsorbent prepared from the leaves were used for removal of Cd(II) and Cu(II) metal ions from waste water. AAS results showed that the best adsorption for Cd(II) took place under acidic condition at temperature 40+2oC with contact time of 120 min while the best adsorption for Cu was recorded at acidic pH under hot temperature with contact time of 90 min. The maximum removal of Cd (II) and Cu (II) at 25±2ºC and 40±2ºC temperature by Bauhinia variegata leaves was 82% and 86.6%, 38.6% and 76.3% respectively. Cd(II) ion have more affinity towards leaves of Bauhinia variegata than Cu(II) ions. Langmuir, Freundlich and Temkin adsorption isotherm models were used to explain adsorption phenomenon of Cd (II) and Cu (II). The powder was regenerated and found to exhibit binding capacity upto four cycles as indicated by AAS. Adsorption kinetics data were modeled using the first order, pseudofirst order, second order, pseudo-second order and Elovich equations models. The results indicate that the pseudo second-order model best describes adsorption kinetic data. The FT-IR analysis revealed that hydroxyl, amines, nitrile, ester and nitro are the main functional groups involved in biosorption of metals. Thus, it can be concluded that dried powder of Bauhinia variegata leaves which is waste can be used as an effective bioadsorbent to remove metals Cd(II) and Cu(II) and therefore can be used in the treatment of waste water for removal of heavy metals.
  • ThesisItemOpen Access
    A green approach for the removal of green approach for the removal of heavy metals Cadmium and Copper from synthetic waste water using Cinnamomum tamala (Buch.-Ham.) T.Nees. & C.H.Eberm.
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2020-12) Nisha; Kasana, Virendra
    Due to non biodegradability, contamination by heavy metals generally Cd (II) and Cu (II) has become a very serious issue since they cause toxic health effects in human and other life forms on earth, even at trace level. Therefore, it is crucial to treat contaminated wastewater before discharging it into the environment. This present study focuses on the use of Cinnamomum tamala as a leaves-based biosorbent, collected from Medicinal plants Research and Development Centre (MRDC), Pantnagar to sequestrate heavy metals Cd (II) and Cu (II) from synthetic wastewater. AAS results showed that the best adsorption for Cd (II) and Cu (II) was obtained in contact time of 120 minutes, at acidic pH 4.1 and 45±2ºC temperature. The maximum removal of Cd (II) and Cu (II) at 25±2ºC and 45±2ºC temperature was recorded to be 33% and 70%, 51% and 74% respectively. Cu (II) was found to have more affinity. Langmuir, Freundlich and Temkin isotherm models, were applied to explain adsorption phenomenon. Regenerated biosorbent was found to exhibit binding capacity upto four cycles as indicated by AAS. First order, Second order, Pseudo-first order, Pseudo-second order and Elovich kinetics models were used. Pseudo secondorder model best describes adsorption kinetic data. The FT-IR analysis revealed that the main functional groups involved in biosorption were alcohols, nitriles, carboxylic acids, amides, nitro. Hence, this easy and simple methodology for the remediation of wastewater by removal of toxic metals Cd (II) and Cu (II) may contribute to the sustainability of a clean environment by avoiding the accumulation of excessive waste, that takes considerable time for degradation.