Abstract: In this paper, we determined rice RVA profile characteristics and their physical/chemical quality indicators of 124 varieties grown in Sichuan Province, and studied the relationship among RVA profile characteristics and between RVA profile characteristics and physical/chemical indicators. To study the differences of RVA profile characteristics of rice varieties with different amylose contents (AC), we divided these varieties into six groups, including waxy rice, low AC, moderate lower AC, moderate AC, moderate higher AC, high AC, and analyzed the differences of RVA profile characteristics between the latter five groups of no-waxy varieties, and the influence of AC on RVA profile characteristics. There were no significant correlation between peak viscosity (PKV) and cool paste viscosity (CPV), and between PKV and consistence (CSV), but significant correlations among other RVA profile characteristics with each other at P = 0.01 except hot paste viscosity (HPV) with breakdown (BDV) at P = 0.05. CPV significantly positive correlated to CSV, with the correlation coefficients of 0.94. Six RVA profile characteristics had signifi-cant correlations with AC and gel consistency (GC) at P = 0.01, AC significantly positively correlated to GC, with the correlation coefficients of -0.82 at P = 0.01; alkali-spreading value (ASV) had no significant correlation with AC, GC, and six RVA profile characteristics. Varieties with different AC had different RVA profile characteristics, when AC was higher, setback (SBV) and CSV were higher and BDV lower.

Key words: Rice, Rice quality, Rice RVA profile characteristics, Physical/chemical quality indicator