蒸汽爆破对沙棘果渣可溶性膳食纤维性质影响  

Effects of Steam Explosion on Properties of Soluble Dietary Fiber from Seabuckthorn Pomace

作　　者：白晓州 张镒飞 BAI Xiao-zhou;ZHANG Yi-fei(Department of Food and Cooking,Zhengzhou Tourism College,Zhengzhou 450000,Henan,China)

机构地区：[1]郑州旅游职业学院烹饪食品系,河南郑州450000

出　　处：《食品研究与开发》2019年第7期34-39,共6页Food Research and Development

摘　　要：以废弃的沙棘果渣(seabuckthorn pomace,SBP)为材料,探究蒸汽爆破对沙棘果渣可溶性膳食纤维得率、物化和功能性质的影响。沙棘果渣经过蒸汽爆破处理后,探究处理前后可溶性膳食纤维得率,物化和功能性质的指标的变化。结果表明:沙棘果渣经蒸汽爆破预处理后,其可溶性膳食纤维含量由4.37%提高到24.71%,蒸汽爆破前后可溶性膳食纤维物化特性指标:持水力(3.44 g/g～8.36 g/g)、持油力(1.23 g/g～3.06 g/g)和吸水膨胀力(2.04 mL/g～4.17 mL/g),功能特性指标:葡萄糖的吸收能力(3.87 mmol/g～9.14 mmol/g)、阳离子交换能力(0.31 mmol/g～0.94 mmol/g)、α-淀粉酶的抑制能力(22.05%～40.13%)和胰脂肪酶的抑制能力(12.44%～24.64%)均得到显著提升(P<0.05)。红外光谱照射表明蒸汽爆破后没有破坏沙棘果渣可溶性膳食纤维(soluble dietary fiber,SDF)的结构,扫描电镜结果显示蒸汽爆破后的SDF表面变得褶皱,并出现许多孔洞。The effects of steam explosion on the yield,physicochemical and functional properties of sea-buckthorn pomace soluble dietary fiber were investigated by using the material of seabuckthorn pomace(SBP).After seabuckthorn pomace was treated by steam explosion,the changes of soluble dietary fiber yield,physicochemical and functional properties before and after treatment with steam explosion were investigated.The results showed that the soluble dietary fiber content of seabuckthorn pomace was increased from 4.37 % to24.71 % after steam explosion pretreatment. The physicochemical properties of soluble dietary fiber before and after steam explosion:water holding capacity(3.44 g/g-8.36 g/g),oil holding capacity(1.23 g/g-3.06 g/g)and water swelling capacity(2.04 mL/g-4.17 mL/g),functional characteristics index:glucose absorption capacity(3.87 mmol/g-9.14 mmol/g),cation exchange capacity(0.31 mmol/g-0.94 mmol/g),the inhibitory ability ofα-amylase(22.05 %-40.13 %)and the inhibitory ability of pancreatic lipase(12.44 %-24.64 %)were significantly increased(P <0.05). Infrared spectroscopy showed that the structure of seabuckthorn pomace soluble dietary fiber(SDF)was not destroyed after steam explosion. Scanning electron microscopy showed that the surface of SDF after steam explosion became wrinkled and many holes appeared.

关 键 词：沙棘果渣 蒸汽爆破 可溶性膳食纤维 物化性质 功能性质 

分 类 号：TS209[轻工技术与工程—食品科学]