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中国农学通报 ›› 2017, Vol. 33 ›› Issue (15): 139-143.doi: 10.11924/j.issn.1000-6850.casb16090049

所属专题: 园艺

• 食品 营养 检测 安全 • 上一篇    下一篇

茶叶籽不饱和脂肪酸加工新工艺技术研究

段一凡1,龚志华1,2,朱海燕1,2,刘林峰1,李国武1,肖文军1,2,3   

  1. (1湖南农业大学茶学教育部重点实验室,长沙 410128;2湖南农业大学国家植物功能成分利用工程技术研究中心,长沙 410128;3湖南农业大学湖南省植物功能成分利用协同创新中心,长沙 410128)
  • 收稿日期:2016-09-09 修回日期:2016-11-29 接受日期:2016-12-07 出版日期:2017-05-26 发布日期:2017-05-26
  • 通讯作者: 肖文军
  • 基金资助:
    湖南省科技厅重点研发计划“茶叶籽油料资源高效综合利用关键技术创新与示范”(2016NK2102)。

Processing Technology of Camellia sinensis Seed Unsaturated Fatty Acids

Duan Yifan1, Gong Zhihua1,2, Zhu Haiyan1,2, Liu Linfeng1, Li Guowu1, Xiao Wenjun1,2,3   

  1. (1Key Lab of Tea Science of Ministry of Education, Changsha 410128; 2National Research Center of Engineering Technology for Utilization of Botanical Functional Ingredients, Changsha 410128; 3Hunan Collaborative Innovation Center for Utilization of Botanical Functional Ingredients, Hunan Agricultural University, Changsha 410128)
  • Received:2016-09-09 Revised:2016-11-29 Accepted:2016-12-07 Online:2017-05-26 Published:2017-05-26

摘要: 为了解决茶叶籽在生产中利用不足的问题,以群体茶树品种的茶叶籽为原料,在优化筛选其干燥工艺技术的基础上,选用阴干脱壳并烘至足干工艺对其进行干燥,以不饱和脂肪酸萃取得率为考察指标,考察萃取压力、萃取温度、萃取时间3个单因素对不饱和脂肪酸萃取得率的影响,然后通过正交试验与验证性实验,优化筛选超临界CO2萃取茶叶籽不饱和脂肪酸工艺技术。结果表明:3个因素对茶叶籽不饱和脂肪酸萃取得率的影响次序依次为萃取温度>萃取时间>萃取压力,其中萃取温度影响显著(P<0.05)。超临界CO2萃取茶叶籽不饱和脂肪酸的最佳工艺条件为萃取压力25 MPa、萃取温度45℃、分离温度55℃、CO2流量20~30 kg/h,时间165 min,在该工艺条件下,不饱和脂肪酸得率为8.77%,不饱和脂肪酸百分比为80.30%,比传统索氏提取法的得率6.02%、不饱和脂肪酸百分比79.67%分别提高2.75%、0.63%。

关键词: 微生物发酵床, 微生物发酵床, 废弃垫料, 毛木耳, 菌丝生长

Abstract: UseStheSseedsSofSdifferentSteaSvarietiesSasStheSrawSmaterials,Schoosing naturally dried on the basis of optimal screening drying technology, shelling and drying to enough status, with the index of the rateSofSextractingSunsaturatedSfattySacid,StheSresult,SbasingSonStheSextractionSpressure,SextractionStemperatureSandSextractionStime,SshowsSthatStheSnewStechniqueSofSextractingSunsaturatedSfattySacidSwithStheSconditionSofStheSsupercriticalSCO2SisSoptimized.STheSorthogonalSexperimentsSandSconfirmatorySexperimentsScanSproveStheSconclusion.AsStheSresult,StheSthreeSfactorsS(theSextractionSpressure,StheSextractionStemperatureSandStheSextractionStime)ShaveSdifferentSlevelsSofSimpactsSonStheSrateSofSextractingSunsaturatedSfattySacid;StheSextractionStemperatureShasStheSmostSsignificantSimpactsS(PS2SflowSaroundS20StoS30SkilogramSperShour,SandSaStimeSperiodSofS165Sminutes),StheSrateSofSextractingSunsaturatedSfattySacidSisS8.77%SandStheSpuritySisS80.30%.SComparingSwithStheSresultsSofSSoxhletSextractingSmethodS(theSrateSofSextractingSunsaturatedSfattySacidSisS6.02%SandStheSpuritySisS79.67%),StheSrateSofSextractingSunsaturatedSfattySacidShasSincreasedSbyS2.75%SandStheSpurityShasSincreasedSbyS0.63%.SS

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