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超临界CO2萃取花椒油树脂的研究 总被引:1,自引:0,他引:1
研究了萃取花椒油树脂的工艺,通过单因子实验和正交实验优化了超临界CO2萃取花椒油树脂的最佳工艺条件:原料粒度60目,流量25L/h,萃取时间2h,温度40℃,压力20MPa。 相似文献
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以萃取高纯度辣椒红色素的色价、吸光比、去除产品中的异味为目的,采用传统的溶剂法辣椒红色素为原料,用CO2超临界萃取为手段,系统的分析了CO2超临界的工作压力、流量、温度、时间,对辣椒红色素提纯的影响,通过UVPC-2401分光光度法对萃取产品进行了分析测试,确定了超临界萃取溶剂法生产的辣椒红色素的最佳工艺条件。由于温度对色素的热稳定性影响较大,本文对常温、40℃、50℃进行了研究,在一定的压力下,确定了40℃为最佳温度条件;在一定的温度下,压力低于15MPa色素有气味,20MPa下无气味无夹带,25MPa下有夹带,确定了压力为20MPa;CO2流量过大,增加推动力,确定了流量为0.3m3/h。以上条件下可以显著去除产品的异味,提高产品的色价、吸光比,经CO2超临界萃取的产品满足高端用户的需求。 相似文献
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Agnes Sass-Kiss Balint Czukor Yanxiang Gao Pal Stefanovits Ferenc Boross 《Journal of the science of food and agriculture》1998,76(2):189-194
Supercritical carbon dioxide (SC-CO2) extraction on a laboratory-scale, was applied to produce oleoresin from dried onion (Allium cepa L). The goal of this work was to determine the optimal conditions of extraction for producing oleoresin with the highest yield and the best quality. A polynomial model was developed on the data. The square of correlation coefficient was R2=0·9022 (at P⩽0·05). The statistical analysis showed that the extraction pressure, temperature, and time have significant influence on the yield of the oleoresin. Increasing these parameters resulted in an increase in the yield. Maximum yield was obtained when the extraction pressure and temperature were above 350 bar and 57°C, respectively. At the lowest pressure (150 bar) applied the highest concentration of sulphur was produced in the oleoresin. The concentration of sulphur increased as a function of temperature when the pressure was maintained at 300 and 400 bar. The composition of volatile compounds of oleoresin differed from that of distilled onion oil. © 1998 SCI. 相似文献
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研究了超临界 CO2 抽提去除绵羊皮中油脂的新技术。试验了皮样水分、CO2 浓度、CO2 流速和抽提时间等因素对脱脂率的影响。结果表明 :绵羊皮脱脂率随着 CO2 浓度、CO2 流速和抽提时间的增大而提高 ;随着水分的增加而降低。在最佳试验条件下 ,脱脂率可达 94 %以上。 相似文献
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文章研究了CO2流量、萃取压力、萃取时间和萃取温度四个因素对肉桂精油超临界CO2萃取的影响,以肉桂精油得率为指标,采用正交试验方法优选了萃取条件.结果表明:肉桂精油最佳萃取条件为,CO2流量为20 kg/h、萃取压力25 MPa、萃取时间2.5 h、萃取温度45℃,此条件下肉桂精油的得率为3.8%. 相似文献
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试验研究了超临界CO2萃取姜油树脂过程中生姜的干燥方式对萃取物主要成分的影响.采用真空冷冻干燥方法脱除莱芜生姜中的水分,然后用超临界CO2萃取生姜中的姜油树脂.对所得萃取物进行气相色谱-质谱联用分析.并与常规的常温干燥脱水生姜超临界CO2萃取物的分析结果比较.结果表明冷冻干燥与常温干燥脱水所得姜油树脂主要成分不同,冷冻干燥处理样品提取物中含量最高的物质为姜酮,占提取物总量的20.802%,姜辣素组分占52.410%,挥发油组分占22.740%,姜辣素含量高于挥发油含量;常温干燥样品其中含量最高的为没药烯,占总含量的28.157%,挥发油组分占52.410%,姜辣素组分占26.738%,挥发油含量高于姜辣素含量.物料干燥方式对超临界CO2萃取姜油树脂成分有较大影响,与常温干燥相比冷冻干燥生姜的超临界CO2萃取物中含有更多的姜辣素类成分. 相似文献
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对超临界CO2萃取山葡萄籽油的工艺条件进行了研究,研究了原料粉碎粒度、萃取压力、萃取温度和萃取时间对葡萄籽出油率的影响。结果表明:原料粉碎粒度60目,萃取压力30Mpa,萃取温度35℃,萃取时间160min为最佳工艺条件,在此条件下,出油率可达18.31%。 相似文献
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Stela Jokić Marco Bijuk Krunoslav Aladić Mate Bilić Maja Molnar 《International Journal of Food Science & Technology》2016,51(2):403-410
The aim of this study was to use waste from the wine production process with special accent on grape seeds and new green technology. Supercritical CO2 was considered as a green solvent in extraction of grape seed oil. The effects of different extraction process parameters on oil yield and antioxidant activity were investigated. Extraction optimisation was conducted using response surface methodology (RSM). Extraction pressure has proven to be the most significant factor influencing oil yield and antioxidant activity (P < 0.0001). The optimal conditions for obtaining the highest oil yield and antioxidant activity within the experimental range of the variables studied were at extraction pressure of 400 bar and temperature of 41 °C. Under these optimal conditions, the predicted extraction oil yield was 14.49% and DPPH 37.07%. Applying this green extraction method, the oil from grape seeds was totally extracted. The produced oil was of satisfactory quality, and the content of α‐tocopherol in obtained grape seed oil at optimal extraction conditions was 36.05 mg kg?1. 相似文献
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对超临界CO2流体萃取植物化学物的研究进行了综述,为超临界CO2流体萃取技术能够在植物化学物提取方面提供参考。该综述探讨了超临界CO2萃取技术的原理,结合实例说明萃取温度、萃取压力以及夹带剂对萃取效果的影响,并针对超临界CO2萃取在植物化学物提取中的展望和存在问题进行了讨论,结果显示它是一种高效分离技术,在植物化学物的提取中具有一定的运用前景。 相似文献