朱俊向, 吴 昊, 杨绍兰, 王成荣. 超声辅助提取冻干番茄粉番茄红素的工艺优化[J]. 农业工程学报, 2013, 29(18): 284-291. DOI: 10.3969/j.issn.1002-6819.2013.18.034
    引用本文: 朱俊向, 吴 昊, 杨绍兰, 王成荣. 超声辅助提取冻干番茄粉番茄红素的工艺优化[J]. 农业工程学报, 2013, 29(18): 284-291. DOI: 10.3969/j.issn.1002-6819.2013.18.034
    Zhu Junxiang, Wu Hao, Yang Shaolan, Wang Chengrong. Technology optimization of ultrasonic-assisted extraction for lycopene from lyophilized tomato powder[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2013, 29(18): 284-291. DOI: 10.3969/j.issn.1002-6819.2013.18.034
    Citation: Zhu Junxiang, Wu Hao, Yang Shaolan, Wang Chengrong. Technology optimization of ultrasonic-assisted extraction for lycopene from lyophilized tomato powder[J]. Transactions of the Chinese Society of Agricultural Engineering (Transactions of the CSAE), 2013, 29(18): 284-291. DOI: 10.3969/j.issn.1002-6819.2013.18.034

    超声辅助提取冻干番茄粉番茄红素的工艺优化

    Technology optimization of ultrasonic-assisted extraction for lycopene from lyophilized tomato powder

    • 摘要: 为了提高番茄原料中番茄红素的提取率,增加番茄深加工的利用价值,该文研究了冻干番茄粉粒度范围、液料比、超声温度、超声比功率和超声处理时间5个因素对番茄红素提取率的影响,通过响应面分析优化出超声辅助提取(ultrasound assisted extraction, UAE)冻干番茄粉(<74 μm)中番茄红素的最佳工艺,并与常规溶剂提取(conventional solvent extraction, CSE)进行了比较。确定的最优工艺条件为:液料比41:1 mL/g、超声温度55℃、超声比功率18 W/g,超声处理时间15 min。响应面验证试验番茄红素提取率为1.82±0.05 mg/g(超声时间10 min),与优化模型预测值1.83 mg/g基本一致,验证了模型的可靠性。UAE的番茄红素提取率较CSE增加了6.04%,提取时间节省了92.47%。该文为番茄红素的高效提取及番茄的综合利用提供了参考。

       

      Abstract: Abstract: Lycopene is the pigment primarily responsible for the characteristic deep-red color of ripe tomato fruits, comprising approximately 80% to 90% of the pigments present. Early studies focused on other pro-vitamin A carotenoids (α-carotene, β-carotene), which were negligible. In recent years, increasing studies indicated that lycopene, with its acyclic structure and large array of conjugated double bonds carries many distinct biological and physicochemical properties. Lycopene is among the most efficient singlet oxygen quenchers of the natural carotenoids without pro-vitamin A activity. It acts as a natural antioxidant in human serum and other tissues to protect the oxidative damage of lipids, proteins, and DNA. Other evidence from epidemiological and animal studies supported the chemoprevention potential of lycopene and the reduction in chronic disease (including cancer) of lycopene metabolites. Lycopene, as a natural food additive, is given more attention due to extensive use and deep understanding of the natural ingredients in food. Therefore, adding lycopene to functional foods raises concerns about green and efficient extraction technology. Conventional solvent extraction (CSE) techniques used for the solvent extraction of natural products are associated with longer extraction times and use of large amount of organic solvents. However, ultrasound assisted extraction (UAE) can be effectively used to improve the extraction rate by increasing the mass transfer rates and rupturing cell walls due to the ultrasonic cavitation effect. Compared with other material pretreatment methods, lyophilization induces better retention of lycopene bioactivity from raw tomatoes. Superfine grinding, pertaining to cellular level pulverizing techniques, can be used to get fruit and vegetable powder with a small particle size and a large specific surface area. However, studies of freeze-drying application in combination with superfine pulverizing technology have not been reported in extraction of lycopene. Thus, in this paper, lyophilization and superfine grinding were applied for the preparation of red ripe tomatoes. Tomato powder, with a particle size interval of < 74 μm, was selected as the extraction material by using standard sieve. The effects of liquid-to-material ratio, ultrasonic temperature, ultrasonic power, and ultrasonic time on the extraction yield of lycopene were studied by single-factor tests. Response surface methodology was used to optimize UAE conditions of lycopene from lyophilized tomato powder. On the basis of the optimum process, a comparison of efficiency with CSE was studied. The results showed that the best extraction conditions for lycopene were as follows: the liquid-to-material ratio was 41:1 mL/g, the ultrasonic temperature was 55℃, the ultrasonic specific power was 18 W/g and the ultrasonic time was 15 min. In the validation test, the average extraction yield of lycopene was 1.82 mg/g with an ultrasonic time of 10 min. The measured value was consistent with the predicted value, which was 1.83 mg/g. The reliability of the model was proved. Compared to CSE, the extraction yield of lycopene of UAE was 1.82 ± 0.05 mg/g, which was increased by 6.04%; the extraction time was 15 min, which was reduced by 92.47%. The paper provides a reference for the high effective extraction of lycopene and comprehensive utilization of the tomato.

       

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