Effect of ultraviolet irradiation on wheat (Triticum aestivum) flour: Study on protein modification and changes in quality attributes

被引:29
作者
Kumar, Amit [1 ]
Rani, Poonam [1 ]
Purohit, Soumya Ranjan [1 ,2 ]
Rao, Pavuluri Srinivasa [1 ]
机构
[1] Indian Inst Technol, Agr & Food Engn Dept, Kharagpur 721302, W Bengal, India
[2] Amity Univ, Amity Inst Food Technol, Noida 201313, Uttar Pradesh, India
关键词
UV Irradiation; Protein modification; Gluten; FTIR spectroscopy; SECONDARY STRUCTURE; BREAD QUALITY; UV; FUNCTIONALITY; IMPROVEMENT; RADIATION; CASSAVA; GLUTEN; IMPACT; DOUGH;
D O I
10.1016/j.jcs.2020.103094
中图分类号
TS2 [食品工业];
学科分类号
0832 ;
摘要
Wheat is one of the most widely consumed cereals, and it witnesses huge variation in its physicochemical properties due to preand post-harvest operations, hence, it undergoes many physicochemical treatments to achieve optimum baking characteristics. In the current study, ultraviolet (UV) radiation is proposed as a green technology to modify the wheat flour characteristics. Irradiation of Wheat flour with UV-C radiation (254 nm) of different radiation power and exposure time resulted a significant change in the physicochemical properties (water-binding capacity, amylose content, reducing sugar, sulfhydryl (SH), disulfide (SS) groups level). Further, decrease in gluten content, increase in total volatile basic nitrogen (TVBN) content, and photo-induced thioldisulfide bridge exchange was observed upon irradiation. FTIR analysis of flour, gluten and gliadin protein confirmed the modification in protein conformations upon irradiation. The beta-sheet had the highest contribution in protein conformation for wheat flour, while for gluten protein powder, random coils showed the maximum contribution. The first two principal components could explain 92.55% of total variance during principal component analysis, and the gluten content was correlated positively with SS content but negatively with SH and TVBN content. This study will help researchers and industrialist to understand the interactions of UV radiation with biological material.
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页数:13
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