ACTIVITY OF POLYPHENOL OXIDASE IN SORGHUM GRAIN (SORGHUM BICOLOR L.)

Зерновое хозяйство России

A. A. Yatsyna¹  V. V. Kovtunov¹ 

[1] FSBSI All-Russian Research Institute of Grain Crops named after I.G. Kalinenko;

关键词: sorghum;    1000-grain weight;    grain color;    polyphenol oxidase;    quality of products;   

DOI  :  

来源: DOAJ

【 摘 要 】

Grain of grain sorghum has different ways of use. In many countries of the world grain of sorghum is applied for cooking different food products. Thus grain of sorghum is imposed certain requirements in dependence of the purpose of its use.  The article gives the results of study of activity of polyphenol oxidase in grain of 49 varieties and selective lines of grain sorghum of various origins. In the trials we used grain with different 1000-grain weight and color. 1000-grain weight varied from 10,9 to 48,5 g. Grain color was presented with a total color spectrum. It has been determined that the activity of polyphenol oxidase (PPO) in grain of studied sorghum samples varied from 2,83 to 21.01 u/g. The majority of sorghum samples of I.G. Kalinenko ARRIGC possess low activity of PPO. It has been shown that the activity of PPO negatively correlates with grain weight (r=-0,76) and positively correlates with grain color (r=0,49). The activity of PPO can result in darkening of the product, reducing its quality. For cooking of the most food product from grain of sorghum it’s necessary to use grain of light colored varieties of sorghum with the low activity of PPO.

【 授权许可】

Unknown