Paper Title
A Relative Study of a Few Locally Available Rice Varieties of North East India on in Vivo Glycaemic Index

Abstract
Diabetes mellitus is one of the major contributors of bereavement among various non-communicable diseases that affect population of many developing countries like India. So an attempt was made to analyse the glycemic index and functional properties i.e. total antioxidant capacity (TAC), total phenolics and total flavonoids of 5 randomly selected rice genotypes of northeast India. Black rice (BR), red rice (RR), green rice (GR), mud rice (MR) and Mahsuri (WR) were the five varieties of rice selected for the study. Black rice was procured from west Imphal, Manipur and organic RR and GR were from Nagaon, Assam. From Regional Agricultural Research Station (RARS), Titabor, Jorhat Mahsuri was collected which is a popular white rice variety of Assam. MR in the form of Kumal saul or Buka saul was procured from local market of north Guwahati, Assam which is one of the most liked Assamese breakfast cereal. Under the biological parameters TAC, TPC and TFC or five various rice varieties were estimated. Among the various in vitro antioxidant assays three were selected for the study. Those were- DPPH, ABTS and FRAP. It was found that in all the methods BR showed best antioxidant properties followed by RR and GR. WR showed very low scavenging properties in all the three TAC assays. TPC of pigmented varieties increased over time whereas non pigmented varieties decreased. Increased value of TFC was observed in MR and WR. Parboiling might be a cause of low value of TAC, TPC and TFC in MR. WR too showed poor TPC and TFC similar to MR. In vivo GI was estimated in both normal as well as diabetic SD rats in four different rice varieties namely BR, RR, GR and WR. In normal rats BR showed lowest GI value i.e. 75.22 and in diabetic rats RR showed lowest i.e. 88.09. In both the cases WR showed highest GI value i.e. 87.30 in normal rats and 102.5 in diabetic rats. So by considering all the results of various analyses BR and RR can be emphasized to include in the daily diet of people especially diabetic and other patients with NCDs as they are very vulnerable in nature. Keywords - Antioxidant Capacity, Mahsuri, Kumal Saul, Buka Saul, Phenolics, Flavonoids, Scavenging, Mud rice