食品科学2024，Vol.45Issue(8)：185-192,8.DOI:10.7506/spkx1002-6630-20230404-028
微波超声联用处理对青稞β-葡聚糖理化性质及结构特性的影响
Effect of Microwave-Ultrasound Treatment on Physicochemical and Structural Properties of Highland Barley β-Glucan
摘要
Abstract
The extraction efficiency,physicochemical properties,and structural characteristics of β-glucan extracted from highland barley branby sequential microwave-ultrasound-assisted extraction were explored.At the same heating rate,microwave enhanced α-amylase activity.The extraction efficiency of highland barley β-glucan was correlated with ultrasound power and treatment time.An ultrasound power of 600 W for 30 min and microwave heating at 60℃ for 30 min resulted in the maximum β-glucan yield of(6.30±0.38)%.The results of physicochemical properties showed that with increasing sonication time up to 40 min,the solubility and foaming capacity of barley β-glucan increased significantly(P<0.05),while the turbidity and emulsifying capacity decreased significantly(P<0.05).The results of particle size distribution showed that with increasing sonication time,the relative molecular mass of barley β-glucan decreased,and ultrasound changed the rheological behavior of β-glucan,decreasingits viscosity and resulting in shear thinning.The infrared spectroscopic results showed that sonication did not change the functional groups of β-glucan,but it caused partial breakage of the glycosidic bonds.The microscopic results showed that ultrasonic treatment led to a looser structure of barley β-glucan,which was conducive to improving its extraction efficiency.Therefore,the microwave-ultrasound-assisted extraction of β-glucan from highland barley provides a basis for developing new food types and functional products.关键词
微波超声联用处理/青稞β-葡聚糖/提取率/理化性质/结构特性Key words
combined microwave-ultrasound treatment/barley β-glucan/extraction efficiency/physicochemical properties/structural properties分类
轻工纺织引用本文复制引用
于丽雅,石梦梦,王月琴,周明,曹洪伟,张春红,宋洪东,管骁..微波超声联用处理对青稞β-葡聚糖理化性质及结构特性的影响[J].食品科学,2024,45(8):185-192,8.基金项目
上海市科学技术委员会国内合作项目(21015801100) （21015801100）
中国科学技术协会青年人才托举工程项目(2021QNRC001) （2021QNRC001）
