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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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20211
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Subject: Agricultural Biochemistry × Author: Aranha, Deena Lyrisha × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    STARCH DIGESTIBILITY AND ESTIMATED GLYCEMIC INDEX OF RICE DIFFERING IN AMYLOSE CONTENTS
    (2021) Aranha, Deena Lyrisha; Baishya, Samindra
    Rice (Oryza sativa L.) is the most important cereal crop worldwide and serves as the major energy source in human nutrition. Starch digestion rate is an important consideration for rice consumers, particularly for diabetics. In the present study, eleven rice varieties differing in amylose contents were assessed for their variation in starch digestibility. An in vitro enzymatic starch digestion method was applied to estimate the glycemic index of rice varieties based on the kinetics of starch hydrolysis. Moisture content in the studied varieties ranged from 11.2% to 13.56%, reducing sugars from 0.33 to 0.65g/100g and starch content from 62.33 to 88.17%, with amylose content from 1.6% to 24.34% and amylopectin content from 75.65 to 98.39% on a dry weight basis. In vitro starch digestion resulted in readily available glucose (RAG) content from 44.96 to 95.4% and free glucose (FG) from 0.102 to 0.211%. The digestible and available starch fractions were calculated. Rapidly digestible starch (RDS) ranged from 40.33 to 85.72% and slowly digestible starch (SDS) from 2.59 to 41.99%. The resistant starch (RS) varied between 6.09% and 20.01%. The kinetics of in vitro starch digestion was determined and used for the calculation of hydrolysis index (HI) with which the glycemic index (eGI) was finally estimated. Starch digestibility and eGI varied widely among the rice varieties. The hydrolysis index ranged from 35.88 to 90.25 and with the lowest HI value of 35.88, Gitesh had the lowest eGI of 59.41, followed by Bahadur and Ranjit with eGI of 62.79 and 63.27 respectively. All these three varieties along with Prafulla, Numali, and TTB Black rice were found to be medium glycemic index rice. Sam Chakuwa, Lahi Chakuwa, Betguti, Joha Bora, and Ronga Bora were the high glycemic index rice.