食品工业科技2017，Vol.38Issue(15)：207-211,217,6.DOI:10.13386/j.issn1002-0306.2017.15.039
超声波辅助提取菠萝皮渣多糖及其抗氧化活性研究
Ultrasound-assisted extraction and antioxidant activities of polysaccharides from pineapple peel
摘要
Abstract
Using pineapple peel as materials,optimal process conditions of ultrasound-assisted extraction of polysaccharides and its antioxidant activities were studied.Based on the single factor experiment,orthogonal experiment was conducted to optimize the extraction process.The antioxidant activities in vitro were also evaluated in three systems with hydroxyl radical (· OH) scavenging capacity,DPPH free radical (DPPH·) scavenging capacity and reducing capacity.The optimum conditions of pineapple peel polysaccharides were determined as follows:material to liquid ratio was 1 ∶ 50,extraction time was 40 min,extraction temperature was 60 ℃,ultrasound power was 60％.Under the optimal conditions,the extraction yield was 2.38％.The scavenging rate on hydroxyl radical (· OH) of the polysaccharides from pineapple peel increased with the increase of polysaccharides concentration(1.5～3.5 mg/mL)and was lower than Vc at the same concentration.The polysaccharides from pineapple peel had good DPPH scavenging effect when compared with standard VC and the IC50 on DPPH· was 2.47 mg/mL.The reducing capacity on Fe3+ increased with the increasing concentration.So,the polysaccharides can be extracted effectively by this method and the polysaccharides have good antioxidant activities.The extraction of active polysaccharides from pineapple peel residue can realize the high value utilization of pineapple resources.关键词
菠萝皮渣/多糖/超声提取/抗氧化Key words
Pineapple peel/polysaccharides/ultrasound-assisted extraction/antioxidant activities分类
轻工纺织引用本文复制引用
王标诗,吴艺华,周泽捷,江敏,胡小军,彭元怀,杨娟,刘淑敏..超声波辅助提取菠萝皮渣多糖及其抗氧化活性研究[J].食品工业科技,2017,38(15):207-211,217,6.基金项目
广东省公益研究与能力建设项目(2015A010107015) （2015A010107015）
岭南师范学院热带与南海资源协同创新中心项目(CIL1503)和岭南师范学院自然科学研究项目(YL1403)联合资助. （CIL1503）
