摘要
以火龙果果皮为原料,制备3种不同粒径的火龙果高膳食纤维果皮粉(DFRPP):DFRPP80、DFRPP140和DFRPP250,测定其总膳食纤维、可溶性和不溶性膳食纤维含量,并对其持水性、持油性、溶胀性和对葡萄糖的透析阻滞能力进行研究。结果表明:粒径为58～104μm的DFRPP140中总膳食纤维和可溶性膳食纤维含量最高,分别为79.37%和33.07%,其可溶性膳食纤维与不溶性膳食纤维具有良好的比例模式,且其持水性、持油性和溶胀性最强,分别为54.20g/g、2.65g/g和50.63mL/g;其对葡萄糖的透析阻滞系数最好,在20、40、60min时分别是60.24%、59.24%和62.83%。DFRPP140可作为食品膳食纤维的优良来源。
Dietary fiber-rich powder from piyata peel （DFRPP） with three different particle sizes （DFRPP80, DFRPP140 and DFRPP250） was prepared. The contents of total dietary fiber （TDF）, soluble dietary fiber （SDF） and insoluble dietary fiber （IDF） were determined. The physicochemical characteristics of DFRPP were also investigated. The results showed that the contents of TDF and SDF in DFRPP140 with particle size of 58--104 ~xm revealed the highest level, which were 79.37% and 33.07%, respectively. DFRPP140 showed a good SDF/IDF ratio and the strongest water-holding capacity （WHC, 54.20 g/g）, oil-holding capacity （OHC, 2.65 g/g） and swelling capacity （SC, 50.63 mL/g）. Moreover, DFRPP140 had the best glucose dialysis retardation index （GDRI）, which was 60.24%, 59.24% and 62.83% at 20, 40 min and 60 min, respectively. These findings suggest that DFRPP140 can be seen as an excellent source of dietary fiber for foods.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2012年第19期164-167,共4页
Food Science
关键词
火龙果果皮
膳食纤维
理化性能
葡萄糖透析阻滞系数
piyata peel
dietary fiber
physicochemical characteristics
glucose dialysis retardation index
