黑米色素提取工艺优化及其稳定性  

Optimization of Extraction Technology and Stability of Black Rice Pigment

作　　者：张素敏[1] 李俊伟 李俊瑞 王丽莎 朱俊玲[1,3] ZHANG Su-min1 , LI Jun-wei2, LI Jun-rui2 , WANG Li-sha1 , ZHU Jun-ling1,3(1.College of Food Science and Engineering,Shanxi Agricultural University,Taigu 030801, China; 2.Taigu Xin Bing Ji Food Industry Co., Ltd., Taigu 030801, China ; 3.Shanxi Functional Food Research Institute,Taigu 030801, China)

机构地区：[1]山西农业大学食品科学与工程学院,山西太谷030801 [2]太谷县鑫炳记食业有限公司,山西太谷030801 [3]山西功能食品研究院,山西太谷030801

出　　处：《食品工业科技》2018年第19期156-161,167,共7页Science and Technology of Food Industry

基　　金：山西省重点研发项目(201703D211012-2);山西农业大学横向项目;山西省重点研发计划重点项目(201703D211001)

摘　　要：以黑米为材料,采用醇提法提取黑米色素,从而达到多元化利用黑米资源的目的。考察了料液比、乙醇体积分数、浸提温度、浸提时间对黑米色素提取液吸光值的影响,在此基础上,利用响应面法对黑米色素提取工艺参数进行了优化,并探讨了温度、pH、光照、氧化剂对黑米色素稳定性的影响。结果表明:提取黑米色素的最佳提取工艺参数为:料液比1∶30.5 g/m L、乙醇体积分数44%、浸提温度90℃、浸提时间104 min。黑米色素在低于90℃、光照、p H为2~6的酸性环境条件下稳定,但氧化剂过氧化氢的存在会影响黑米色素的稳定性。因此黑色色素在具体应用中应在低温、酸性条件下进行,可以不避光保存,但在储运过程中要避免其与氧化剂接触。该工艺合理可靠,为工业大量提取黑米色素提供了一定的理论依据。In this paper,black rice was used as material to extract black rice pigment by alcohol extraction so as to achieve the goal of making full use of black rice resources.The effects of solid-liquid ratio,ethanol volume fraction,extraction temperature and time on the extraction absorbance of the pigment were investigated.On the basis,the response surtace method was used to optimize the extraction parametres of black rice pigment,the effects of temperature,pH,light,oxidation agent on the stability of the effect of black rice pigment were investigated. The results showed that the optimum conditions for extraction of black rice pigment as follows： Solid-liquid ratio 1∶ 30.5 g/mL,ethanol volume fraction 44%,extraction temperature 90 ℃,and extraction time 104 min.Black rice pigment was stable under 90 ℃,under light condition and p H2-6 acid environment,but the presence of oxidant H2O2 wouldl affect the stability of black rice pigment. Therefore,black pigment should be carried out under low temperature and acidic conditions,and it could be kept away from light.However,it should avoid contacting with oxidants during storage and transportation.The technology was reasonable and reliable,which would provide a theoretical basis for industrial extraction of black rice pigment.

关 键 词：黑米 色素 响应面 工艺优化 稳定性 

分 类 号：TS201.3[轻工技术与工程—食品科学]