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林产化学与工业

林产化学与工业 ›› 2017, Vol. 37 ›› Issue (1): 116-122.doi: 10.3969/j.issn.0253-2417.2017.01.015

• 研究报告 • 上一篇    下一篇

油橄榄果渣膳食纤维碱法提取工艺优化及其理化性质研究

丁莎莎1, 黄立新1, 张彩虹1,2, 谢普军1, 张琼1, 邓叶俊1   

  1. 1. 中国林业科学研究院 林产化学工业研究所;生物质化学利用国家工程实验室;国家林业局 林产化学工程重点开放性实验室;江苏省 生物质能源与材料重点实验室, 江苏 南京 210042;
    2. 中国林业科学研究院 林业新技术研究所, 北京 100091
  • 收稿日期:2016-03-28 出版日期:2017-02-25 发布日期:2017-02-25
  • 通讯作者: 黄立新,研究员,博士生导师,研究领域为天然产物提取分离纯化及新型干燥技术;E-mail:l_x_huang@163.com。 E-mail:l_x_huang@163.com
  • 作者简介:丁莎莎(1993-),女,河南南阳人,硕士生,研究方向为农林产品深加工;E-mail:dingshasha0317@163.com
  • 基金资助:
    江苏省自然科学基金资助项目（BK20151067）

Optimization of Extraction Technology of Dietary Fiber from Olive Pomace and Its Physicochemical Characteristics

DING Shasha1, HUANG Lixin1, ZHANG Caihong1,2, XIE Pujun1, ZHANG Qiong1, DENG Yejun1   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2016-03-28 Online:2017-02-25 Published:2017-02-25

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摘要： 以油橄榄脱脂果渣为原料，采用碱法提取油橄榄果渣水溶性膳食纤维（SDF）和水不溶性膳食纤维（IDF），并对其理化性质进行研究。在单因素试验基础上采用正交试验优化油橄榄果渣膳食纤维最佳提取工艺条件为：NaOH质量分数8%、提取温度80℃、提取时间80 min、液料比15：1（mL：g）。在最佳提取工艺条件下，油橄榄果渣SDF产率为28.74%，IDF产率为52.39%。理化性质研究结果表明：油橄榄果渣IDF的持水力、膨胀力和持油力分别为3.38 g/g、2.20 mL/g、1.91 g/g；油橄榄果渣SDF的持水力、膨胀力和持油力分别为5.05 g/g、4.78 mL/g、4.25 g/g。在透析90 min时，油橄榄果渣SDF、IDF和脱脂果渣的葡萄糖透析延迟指数分别为13.22%、8.55%、4.38%。扫描电镜观察表明，制备的IDF结构疏松，具有较大的空腔和裂缝，而SDF粒径较小，呈堆积状，具有较多的空腔。

关键词: 油橄榄果渣, 膳食纤维, 碱法, 提取, 理化性质

Abstract: Using olive pomace as the raw material, the alkali method was adopted to extract soluble dietary fiber (SDF) and insoluble dietary fiber (IDF), and its physicochemical properties were also studied. The extraction conditions of IDF and SDF were optimized through orthogonal test based on single factor test. The results showed that the optimum extraction conditions were concentration of NaOH 8%, the extraction temperature of 80℃, the extraction time 80 min, and liquid-solid ratio of 15:1(mL:g). Under this conditions, the yields of SDF and IDF were 28.74% and 52.39%, respectively. The results of physicochemical properties showed that the water holding capacity,swelling capacity and oil holding capacity of IDF were 3.38 g/g, 2.20 mL/g, 1.91 g/g, respectively. The water holding capacity, swelling capacity and oil holding capacity of SDF were 5.05g/g, 4.78 mL/g and 4.25 g/g, respectively. The glucose dialysis retardation index of SDF, IDF and defatted pomace were 13.22%,8.55% and 4.38%, respectively, by the dialysis for 90 min. The results of scanning electron microscope showed that IDF had looser morphology and more cavities and cracks, and SDF had smaller particle size and more cavities after alkali extraction.

Key words: olive pomace, dietary fiber, alkali method, extraction, physicochemical properties

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