番木瓜皮可溶性膳食纤维酸碱耦合法提取工艺的优化  

Optimization of Extraction Process of Soluble Dietary Fiber from Papaya(Carica papaya Linn.) Peel from Hainan/Sekaki Variety and Evaluation of Physicochemical Properties

作　　者：曾广琳[1] 张晶晶[1] 龚烨[1] 张伟敏[1] 潘永贵[1] 陈文学[1] 白新鹏[1] ZENG Guang Lin ZHANG Jingjing GONG Ye ZHANG Weimin PAN Yonggui CHEN Wenxue BAI Xinpeng(Food CoUege of Hainan University Haikou, Hainan 57022)

机构地区：[1]海南大学食品学院,海口570228

出　　处：《热带生物学报》2016年第4期489-496,共8页Journal of Tropical Biology

基　　金：国家级星火计划重点项目(2014GA800001);海南省产学研一体化专项项目(cxy20150032)

摘　　要：采用单因素和正交试验对番木瓜可溶性膳食纤维(SDF)的酸碱耦合提取法进行了优化并初步评价其理化性质。结果表明:酸法最优工艺为反应时间90 min,p H1.0,温度80℃,料液比1︰25(g︰m L),得率为20.70%。酸法提取后的滤渣用碱法提取的最优工艺为1.4%质量分数的Na OH,温度75℃,料液比为1︰20(g︰m L),时间为80 min,得率为9.17%。化学法提取番木瓜皮SDF的总得率为29.87%。酸提法提取的可溶性膳食纤维的溶解度、持水力及阳离子交换能力均低于碱提法,而持油力高于碱提法。2种化学方法提取的番木瓜皮SDF各具应用价值,对提高番木瓜深加工产品的附加值具有实际意义和应用价值。The single factor experiments and orthogonal experiment was employed to optimize two kind of chemical extraction process of soluble dietary fiber from papaya peel and its physicochemical properties was primarily compared to obtain the functional fraction. The optimum extraction method were as follows： the optimal process of acid hydrolysis method is extraction time 90 min,p H1. 0,extraction temperature 80 ℃,the ratio of water to raw material 1 ︰ 25（ g ︰ m L）,the extraction yield was 20. 70%,while the optimum process of alkali hydrolysis method is Na OH concentration 1. 4%,extraction temperature 75 ℃,the ratio of water to raw material 1 ︰ 20（ g ︰ m L）,extraction time90 min,the extraction yield was 9. 17%. The extraction yield through acid-alkali is29. 87%. The results of physicochemical property experiments showed that the solubility in water,water holding capacity and cation exchange capacity of the soluble dietary fiber extracted by the acid hydrolysis method were lower than that extracted by the alkali hydrolysis method. While the oil holding capacity was higher. In conclusion,the soluble dietary fiber extracted from papaya peel by the two hydrolysis method both showed their different practical application values,which makes sense to the further processing and practical application of papaya.

关 键 词：番木瓜皮 可溶性膳食纤维 提取 理化特性 

分 类 号：S677.9[农业科学—园艺学]