Abstract
This is the first study conducted on a variety of rice (Oryza sativa L.) traditionally grown in the Konuralp region of the Duzce province, in the West Black Sea region of Türkiye. It investigated the physico-chemical composition, phyto-chemical properties, cooking characteristics and bioactive compounds (total phenolic content, antioxidant activity determined with the methods of ABTS•+, CUPRAC, DPPH• and FRAP) of Konuralp Rice (KR) as well as in-vitro bioaccessibility. The proximate chemical composition of the rice was found to be as follows: the moisture content was 13.89%, the protein content was 6.48%, the total dietary fiber was 0.82%, the energy value was 323.44 kcal and the amount of starch was 59.64%. On the other hand, the phytic acid content of the sample was found to be 258.69 mg/100g. The total phenolic content of KR was found to be 2100 mg GAE/100g. The highest antioxidant capacity was found in the method of DPPH• for extractable (12.73 μmol trolox/g) and hydrolyzable phenolics (62.50 μmol trolox/g). The antioxidative bioaccessibility were found to be 80.19% (ABTS•+), 27.96% (CUPRAC), 20.63% (DPPH•) and 0.92% (FRAP). Due to the its physico-chemical and phyto-chemical properties as well as its high bioactive component content, more attention should be paid to the traditionally produced KR.
Thanks
The author would like to thank Prof. Dr. Duygu GOCMEN for her supervision.