کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4564426 | 1628535 | 2007 | 9 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Production of functional substances from black rice bran by its treatment in subcritical water Production of functional substances from black rice bran by its treatment in subcritical water](/preview/png/4564426.png)
Black rice bran was treated by water and subcritical water at temperatures ranging from 20 to 260 °C for 5 min and at 200 and 260 °C for 5–120 min. The bran extracts were analyzed for their radical scavenging activity, protein and carbohydrate contents, molecular-mass distribution, antioxidation activity, emulsifying activity, and emulsion-stabilizing activity. The radical scavenging activity and the protein content of the extract were higher at higher treatment temperature. The carbohydrate content also increased with increasing temperature up to 200 °C, then steeply decreased at the temperatures higher than 200 °C. The bran extracts treated at 260 °C for 5 min exhibited a suppressive activity toward autoxidation of linoleic acid with the increasing the weight ratio of the bran extract to linoleic acid. The bran extracts prepared at 40–200 °C for 5 min showed the emulsifying- and emulsion-stabilizing activities, while the extracts prepared at 220–260 °C were low in the activities.
Journal: LWT - Food Science and Technology - Volume 40, Issue 10, December 2007, Pages 1732–1740