食品科学 ›› 2016, Vol. 37 ›› Issue (22): 60-68.doi: 10.7506/spkx1002-6630-201622009

• 工艺技术 • 上一篇    下一篇

响应面试验优化超声波辅助水酶法提取松籽油工艺及其氧化稳定性

包怡红,郭 阳   

  1. 东北林业大学林学院,黑龙江 哈尔滨 150040
  • 收稿日期:2016-04-07 出版日期:2016-11-16 发布日期:2017-02-22
  • 作者简介:包怡红(1970—),女,教授,博士,研究方向为食品生物技术与功能食品。E-mail:baoyihong@163.com
  • 基金资助:
    中央高校基本科研业务费专项(2572014EA02);哈尔滨市科技创新人才项目(2015RAXXJ010)

Optimization of Ultrasonic-Assisted Aqueous Enzymatic Extraction of Pine Nut Oil and Its Oxidative Stability

BAO Yihong, GUO Yang   

  1. School of Forestry, Northeast Forestry University, Harbin 150040, China
  • Received:2016-04-07 Online:2016-11-16 Published:2017-02-22

摘要: 以红松松籽为原料,经超声波预处理后,利用水酶法提取松籽油,通过单因素试验及响应面试验研究松籽油提取工艺,并对其氧化稳定性进行分析。结果表明,松籽油提取的优化工艺条件为超声强度0.28 W/cm2、超声时间40 min、超声温度50 ℃、料液比1∶5(g/mL)、碱性蛋白酶加酶量1 427 U/g、酶解时间4.08 h、酶解温度44 ℃,在此条件下松籽油得率可以达到73.01%。温度、光照对松籽油氧化有显著促进作用,3 ℃以下避光贮藏松籽油可使其有良好的氧化稳定性。

关键词: 超声波, 水酶法, 响应面, 松籽油

Abstract: The ultrasound-assisted aqueous enzymatic extraction of pine nut oil from Korean pine (Pinus koraiensis) nuts subjected to ultrasonic pretreatment was optimized using one-factor-at-a-time method and response surface methodology. Meanwhile the effects of temperature and light on the oxidative stability of pine nut oil were also analyzed. The optimal extraction conditions were obtained as follows: ultrasonic pretreatment at an intensity of 0.28 W/cm2 for 40 min at 50 ℃, followed by 4.08 h of hydrolysis using 1 427 U/g of alcalase with a substrate to water ratio of 1:5 (g/mL) at 44 ℃. Under these conditions, the yield of pine nut oil reached 73.01%. Both temperature and light significantly influenced the oxidative stability of pine nut oil. Storage at 3 ℃ without light could markedly improve the stability of pine nut oil.

Key words: ultrasonic, aqueous enzymatic method, response surface methodology, pine nut oil

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