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Assam Agricultural University, Jorhat

Assam Agricultural University is the first institution of its kind in the whole of North-Eastern Region of India. The main goal of this institution is to produce globally competitive human resources in farm sectorand to carry out research in both conventional and frontier areas for production optimization as well as to disseminate the generated technologies as public good for benefitting the food growers/produces and traders involved in the sector while emphasizing on sustainability, equity and overall food security at household level. Genesis of AAU - The embryo of the agricultural research in the state of Assam was formed as early as 1897 with the establishment of the Upper Shillong Experimental Farm (now in Meghalaya) just after about a decade of creation of the agricultural department in 1882. However, the seeds of agricultural research in today’s Assam were sown in the dawn of the twentieth century with the establishment of two Rice Experimental Stations, one at Karimganj in Barak valley in 1913 and the other at Titabor in Brahmaputra valley in 1923. Subsequent to these research stations, a number of research stations were established to conduct research on important crops, more specifically, jute, pulses, oilseeds etc. The Assam Agricultural University was established on April 1, 1969 under The Assam Agricultural University Act, 1968’ with the mandate of imparting farm education, conduct research in agriculture and allied sciences and to effectively disseminate technologies so generated. Before establishment of the University, there were altogether 17 research schemes/projects in the state under the Department of Agriculture. By July 1973, all the research projects and 10 experimental farms were transferred by the Government of Assam to the AAU which already inherited the College of Agriculture and its farm at Barbheta, Jorhat and College of Veterinary Sciences at Khanapara, Guwahati. Subsequently, College of Community Science at Jorhat (1969), College of Fisheries at Raha (1988), Biswanath College of Agriculture at Biswanath Chariali (1988) and Lakhimpur College of Veterinary Science at Joyhing, North Lakhimpur (1988) were established. Presently, the University has three more colleges under its jurisdiction, viz., Sarat Chandra Singha College of Agriculture, Chapar, College of Horticulture, Nalbari & College of Sericulture, Titabar. Similarly, few more regional research stations at Shillongani, Diphu, Gossaigaon, Lakhimpur; and commodity research stations at Kahikuchi, Buralikson, Tinsukia, Kharua, Burnihat and Mandira were added to generate location and crop specific agricultural production packages.

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  • ThesisItemOpen Access
    BIOCHEMICAL CHARACTERIZATION OF TEA (Camellia spp) SEED OIL
    (AAU, Jorhat, 2017-07) Sarmah, Kritideepan; Das, P.
    Tea is one of the most popular beverages manufactured from the leaves or the young tender shoots of the tea plants, Camellia sinensis (L.) O. Kuntze. India, which is the highest producer of beverage tea, is not yet fully self sufficient in edible oil production. The present study was undertaken to study the potentiality of tree borne oilseeds like tea. The eight different bi-clonal tea seed stocks were collected, namely TS-378, TS-379, TS-462, TS-463, TS-464, TS-491, TS-506 and TS-520. The crude fat (oil) was extracted from the dried cotyledons of matured tea seeds. On dry weight basis, the oil percentage ranged from 10.75-26.84. The acid values, iodine values, saponification values and specific gravity of different bi-clonal seed stocks were found to be in the range of 1.01-1.22 (mgKOH/g), 72.94-94.91 (gI2/100g) ,177.56-200.45 (mgKOH/g) and 0.82-0.88g/cm3, respectively. The percentage of saturated and unsaturated fatty acids in tea seed oil seven months and eight months after seed formation as determined by Gas chromatography ranged between 20.18-76.44 and 23.56-79.57 and 14.25-29.00 and 71.00-85.75 respectively. The percentage of saturated and unsaturated fatty acids in tea seed oil eight months after seed formation as determined by GC-MS ranged between 2.21-20.3 and 79.97-97.79, respectively. The IC50 values of oils of different bi-clonal seed stocks ranged from 60.3-81.52 mg/ml. The seed cake percentage by weight of different bi-clonal seed stocks ranged from 73.16-89.24. The saponin (%) , nitrogen (%), phosphorus (µg/g), potassium (µg/g) and starch (%) of the seed cake ranged between 2.41-6.52, 1.19-2.93, 2.42-3.68,0.11-0.18,27 and 29-70.77, respectively. The soluble protein content (%) of different bi-clonal seed stocks at 1st, 3rd, 5th and 8th months after seed formation ranged between 2.51-6.41, 3.34-10.23, 5.09-13.87 and 5.41-14.48, respectively. The protein bands of different biclonal seed stocks at various developmental stages as detected by SDS-PAGE ranged between 20-66 kDa. The oil (%) and starch (%) recovery from bi-clonal tea seeds by fermentation process ranged from 0.73-1.75 and 10.19-27.98, respectively. The oil could not be extracted successfully by the mechanical method using mustard oil expeller. Among the tea stocks studied, the oil content was found to be higher after eight months of fruit set. Identification of higher level of oleic acid and linoleic acid in most of the tea seed stocks revealed better nutritional quality of tea seed oil. Among the eight tea seed stocks studied, TS-379 was found to be the best considering the highest amount of oil content (23.3 %- 26.84 %), higher unsaturated fatty acid (90>%) and IC50 value at the lower side. The present study indicated the future scope of tea seed oils and its cake to be exploited commercially in India.
  • ThesisItemOpen Access
    Muga Pupae As A Feed Ingredient For Broiler And Its Effect On Metabolism
    (Assam Agricultural University; Jorhat, 2001) Nath, Shrilekha; Sarkar, C. R.
  • ThesisItemOpen Access
    Growth And Nitrogen Metabolism Of Azolla Under Different Growth Conditions
    (Assam Agricultural University; Jorhat, 2001) Changkakoty, Arun; Borah, R. C.
  • ThesisItemOpen Access
    Studies Of Aroma In Scented Rice (Oryza Sativa L.) Of Assam
    (Assam Agricultural University; Jorhat, 2003) Ahmed, Sadeque Ali; Borua, I.
  • ThesisItemOpen Access
    Biochemical and Molecular Characterization of Indigenous Leafy Vegetables of Jorhat district of Assam
    (AAU, Jorhat, 2015) Choudhury, B. H.; Dr A M Baruah
    Twenty five indigenous leafy vegetables were selected on the basis of their popularity of uses and collected from various places of Jorhat district. These plants were used for biochemical and molecular investigation. These plant species showed significant variations in various biochemical constituents such as moisture (76.40- 92.77%), ash (7.80-17.70%), K (0.64- 9.58%), Na (52.0-233.00 mg/100 g), Ca (200.7-2104.96 mg/100 g), P (38.00-603.00 mg/100 g), Fe (31.00-401.00 mg/100 g, Cu (0.003 -0.020%), Zn (0.013-7.55 mg/100 g), Mn (12.00-132.00 mg/100 g), As (0.00-1.70 mg/100 g), crude fat (1.13-7.10%), crude fibre (2.50-26.10%), crude protein (15.77-39.38%), total free amino acid (129.27-992.00 mg/100 g), starch (18.78-56.42%), TSS (7.37-18.37%), reducing sugar (4.19-18.58%), non-reducing sugar (0.72-7.36%), soluble protein (1.10-4.13%), vitamin C (39.00-119.67 mg/100 g), riboflavin (0.17-8.80 mg/100 g), thiamine (0.00-0.08 mg/100 g), niacin (0.15-2.63 mg/100 g), total alkaloid (0.13-3.23 mg/100 g), saponin (0.23-0.61%), tannin (0.37-2.82%), phytic acid (0.03-0.32%), oxalate (0.02-0.13%), total phenol (0.25-2.2%), free radical scavenging activity (74.81-91.72%), total flavanoid (0.86-3.40%), total flavanol (0.33-1.63%), super oxide dismutase specific activity (0.11-0.24 unit min-1 mg-1protein), catalase specific activity (0.053-0.13 unit min-1 mg-1protein), peroxidase specific activity (0.01-0.08 unit min-1 mg-1protein). The RAPD analysis of Alternanthera spp. land races revealed the genetic diversity among the land races. The maximum level of polymorphism was generated by OPA-04 primer (100%) followed by OPB-05 primer (87.50%). The RAPD analysis of Amaranthus spp. land races revealed the genetic diversity among the land races. The maximum level of polymorphism was generated by OPB-01 primer (71.42%) followed by OPB-07 primer (66.67%). The RAPD analysis of Chenopodium spp. land races revealed the genetic diversity among the land races. The maximum level of polymorphism was generated by OPA-04 primer (100%) followed by OPB-02 primer (77.21%). The RAPD analysis of Enhydra spp. land races revealed the genetic diversity among the land races. The maximum level of polymorphism was generated by OPC-01 primer (100%) followed by OPB-01 primer (80.00%). From the present study it was observed that all the indigenous leafy vegetables are rich in various nutritionally significant biochemical constituents and genetic diversity exists among the land races of studied plant species though no distinct morphological variation was seen.