Effect of Extrusion Processing Conditions on the Phenolic Compound Content and Antioxidant Capacity of Sorghum (Sorghum bicolor (L.) Moench) Bran

被引:27
|
作者
Ortiz-Cruz, Raquel Alejandra [1 ]
Ramirez-Wong, Benjamin [1 ]
Ledesma-Osuna, Ana Irene [1 ]
Torres-Chavez, Patricia Isabel [1 ]
Sanchez-Machado, Dalia Isabel [2 ]
Montano-Leyva, Beatriz [1 ]
Lopez-Cervantes, Jaime [2 ]
Gutierrez-Dorado, Roberto [3 ]
机构
[1] Univ Sonora, Dept Invest Posgrad & Alimentos, Blvd Luis Encinas Rosales S-N, Hermosillo 83000, Sonora, Mexico
[2] Inst Tecnol Sonora, Dept Biotecnol & Ciencias Alimentarias, 5 Febrero 818 Sur, Obregon 85000, Sonora, Mexico
[3] Univ Autonoma Sinaloa, Programa Reg Noroeste Doctorado Biotecnol, Ave Amer & Blvd Univ S-N, Culiacan 80010, Sinaloa, Mexico
关键词
Sorghum bran; Extrusion; Phenolic compounds; Antioxidant capacity; Optimization; BIOAVAILABILITY; BARLEY; FOODS; GRAIN;
D O I
10.1007/s11130-020-00810-6
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Sorghum is a cereal with little use in human diet; however, this grain can provide several nutrients and, additionally, has a high content of phenolic compounds concentrated in bran, which could be beneficial to human health due to its high antioxidant capacity. However, these bioactive compounds are bound within the cell wall matrix; it is necessary to release these compounds to take advantage of their antioxidant properties. The extrusion process increases the accessibility of bound phenolic compounds, breaking their bonds from the bran matrix. The aim of this study was to determine the optimal extrusion conditions for maximizing the phenolic compound content and antioxidant capacity of sorghum bran extrudate. The extrusion process factors evaluated were feed moisture (FM) from 25 to 35% and the fourth extrusion zone temperature (T) in the range of 140-180 degrees C. Analysis of variance and response surface analysis were used in the evaluation. The prediction coefficient, (FM)(2), (T)(2) and their interaction (FM)(T) significantly affected the free total phenolic compounds. The antioxidant capacity of the free total phenolic compounds was significantly affected by (FM)(2) and (T)(2). The optimal extrusion conditions were FM = 30% and T = 160 degrees C, which provided free total phenolic compounds with a value of 7428.95 mu g GAE/g (predicted value: 7810.90 mu g GAE/g) and antioxidant capacity with a value of 14.12 mu mol TE/g (predicted value: 14.85 mu mol TE/g). Results confirmed that extrusion process optimization was useful to increase the content of phenolic compounds and improved the antioxidant capacity of sorghum bran.
引用
收藏
页码:252 / 257
页数:6
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