共查询到20条相似文献,搜索用时 781 毫秒
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研究了超声波辅助提取乌桕籽油的工艺条件。在单因素实验基础上,采用响应面分析法中的Box-Behnken法对影响油脂得率的主要因素进行优化。结果表明:影响乌桕籽油得率的因素主次顺序为提取温度提取时间超声波功率料液比;优化的工艺条件为料液比1∶11、提取温度47℃、超声波功率210 W、提取时间100 min,在此条件下乌桕籽油得率可达36%左右。 相似文献
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超声波辅助提取花椒籽油的工艺研究 总被引:2,自引:1,他引:1
为了提高花椒的经济价值,充分利用花椒籽中的花椒籽油,以脱蜡花椒籽为原材料,利用超声波辅助提取花椒籽油.首先,通过预处理试验确定最佳提取溶剂,然后,通过单因素试验对影响花椒籽油得率的因素(液料比、提取时间、提取温度、超声波功率)进行探讨.最后,采用Box-Behnken中心组合试验设计原理,以油脂得率为考察指标,对液料比、超声功率、提取时间进行3因素3水平响应面分析,确定了在该试验中超声波辅助处理提取花椒籽油最佳工艺参数:液料比:21.5∶1 (mL/g),提取时间:25 min,提取温度:60℃,超声功率350 W.在此条件下,花椒籽油得率为27.25%. 相似文献
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超声波辅助提取金钗石斛多糖工艺优化研究 总被引:2,自引:0,他引:2
优化超声波辅助提取金钗石斛多糖工艺。以多糖提取得率为考察指标,用苯酚-硫酸法测定多糖的含量,采用单因素试验正交试验法考察了料液比、超声波提取功率、提取温度和提取时间对金钗石斛多糖提取得率的影响。超声波辅助提取金钗石斛多糖的最佳提取工艺条件为:料液质量体积比1 g∶15 m L,超声波提取功率为450 W,超声波提取温度为60℃,超声波提取时间为50 min,在此条件下多糖得率为3.11%。 相似文献
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《中国食品添加剂》2015,(11)
以干燥的树莓籽为原料,正己烷为提取有机溶剂,优化微波辅助提取树莓籽油的最佳工艺。在微波温度、料液比、微波时间和微波功率4个单因素实验的基础上,采用正交试验法优化微波辅助提取树莓籽油的最佳工艺条件。实验结果表明,在所考察的各个因素中,微波功率对树莓籽油的提取得率影响最大,其次是微波时间和微波温度,料液比对树莓籽油的得率影响最小。微波辅助提取树莓籽油的最佳提取工艺条件为A2B3C3D1,即浸提树莓籽油宜选用的条件为微波温度55℃,微波时间9min,料液比1∶16(g/m L),微波功率400W。在此最佳提取条件下,微波辅助提取树莓籽油得率为16.52%。 相似文献
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蚕蛹油富含大量不饱和脂肪酸,具有极高的营养价值和经济价值,用途广泛,拥有广阔的应用前景。论述了采用有机溶剂浸提法从蚕蛹中提取蚕蛹油的最佳工艺技术。以固液比(溶剂用量)、浸提时间、浸提温度为因素,蚕蛹油出油率为考察指标,采用单因素试验和正交试验法优化蚕蛹油的石油醚浸提工艺,试验结果表明:蚕蛹中油脂最佳提取工艺参数为固液比1∶20,浸提时间6 h,浸提温度40℃。在此条件下,蚕蛹油得率为31.70%,蚕蛹油呈透明的淡黄色,测得酸价6.73 mg/g,过氧化值4.96 meq/kg,均符合国家食用油标准。 相似文献
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响应面法优化微波辅助提取海蓬子籽油工艺 总被引:1,自引:0,他引:1
以成熟海蓬子种子为原料、石油醚为提取溶剂,采用微波辅助法提取海蓬子籽油。在微波温度、微波时间、料液比和微波功率对海蓬子籽油得率影响4 个单因素试验的基础上,通过响应面法优化微波辅助提取海蓬子籽油的最佳工艺条件。结果表明,微波辅助提取海蓬子籽油的最佳工艺条件为:微波温度55 ℃、微波时间5 min、料液比1∶10(g/mL)、微波功率700 W。在此条件下,海蓬子籽油得率为32.58%。与传统索氏抽提法相比,微波辅助提取海蓬子籽油的得率提高了0.15%,而提取时间仅为索氏抽提法的1.39%。 相似文献
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Study of Optimal Extraction Conditions for Achieving High Yield and Antioxidant Activity of Tomato Seed Oil 总被引:1,自引:0,他引:1
Value of tomato seed has not been fully recognized. The objectives of this research were to establish suitable processing conditions for extracting oil from tomato seed by using solvent, determine the impact of processing conditions on yield and antioxidant activity of extracted oil, and elucidate kinetics of the oil extraction process. Four processing parameters, including time, temperature, solvent-to-solid ratio and particle size were studied. A second order model was established to describe the oil extraction process. Based on the results, increasing temperature, solvent-to-solid ratio, and extraction time increased oil yield. In contrast, larger particle size reduced the oil yield. The recommended oil extraction conditions were 8 min of extraction time at temperature of 25 °C, solvent-to-solids ratio of 5/1 (v/w) and particle size of 0.38 mm, which gave oil yield of 20.32% with recovery rate of 78.56%. The DPPH scavenging activity of extracted oil was not significantly affected by the extraction parameters. The inhibitory concentration (IC(50) ) of tomato seed oil was 8.67 mg/mL which was notably low compared to most vegetable oils. A 2nd order model successfully described the kinetics of tomato oil extraction process and parameters of extraction kinetics including initial extraction rate (h), equilibrium concentration of oil (C(s) ), and the extraction rate constant (k) could be precisely predicted with R(2) of at least 0.957. Practical Application: The study revealed that tomato seed which is typically treated as a low value byproduct of tomato processing has great potential in producing oil with high antioxidant capability. The impact of processing conditions including time, temperature, solvent-to-solid ratio and particle size on yield, and antioxidant activity of extracted tomato seed oil are reported. Optimal conditions and models which describe the extraction process are recommended. The information is vital for determining the extraction processing conditions for industrial production of high quality tomato seed oil. 相似文献
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通过单因素和正交试验分析,确定了低温压榨芝麻油的最佳工艺条件为芝麻粉碎粒度20 目、压榨温度50℃、时间60min、压力40MPa。在此条件下芝麻油提取率43.46%。此工艺条件下生产的芝麻油样品含有丰富的抗氧化成分,不含苯并芘,理化指标和氧化稳定性好于普通芝麻油。 相似文献
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