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中国精品科技期刊2020
张素敏, 李俊伟, 李俊瑞, 王丽莎, 朱俊玲. 黑米色素提取工艺优化及其稳定性[J]. 食品工业科技, 2018, 39(19): 156-161,167. DOI: 10.13386/j.issn1002-0306.2018.19.028
引用本文: 张素敏, 李俊伟, 李俊瑞, 王丽莎, 朱俊玲. 黑米色素提取工艺优化及其稳定性[J]. 食品工业科技, 2018, 39(19): 156-161,167. DOI: 10.13386/j.issn1002-0306.2018.19.028
ZHANG Su-min, LI Jun-wei, LI Jun-rui, WANG Li-sha, ZHU Jun-ling. Optimization of Extraction Technology and Stability of Black Rice Pigment[J]. Science and Technology of Food Industry, 2018, 39(19): 156-161,167. DOI: 10.13386/j.issn1002-0306.2018.19.028
Citation: ZHANG Su-min, LI Jun-wei, LI Jun-rui, WANG Li-sha, ZHU Jun-ling. Optimization of Extraction Technology and Stability of Black Rice Pigment[J]. Science and Technology of Food Industry, 2018, 39(19): 156-161,167. DOI: 10.13386/j.issn1002-0306.2018.19.028

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

  • 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/mL、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、pH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。

     

    Abstract: 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 pH2~6 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.

     

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