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首页> 外文期刊>Journal of Food Science and Technology >Rice phytochemicals concentrated by molecular distillation process and their use as co-surfactant in water dispersion
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Rice phytochemicals concentrated by molecular distillation process and their use as co-surfactant in water dispersion

机译:通过分子蒸馏工艺浓缩的水稻植物化学物质及其在水分散体中作为助表面活性剂的用途

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摘要

This study investigated the effects of evaporating temperature during molecular distillation (MD) process employed to deodorizer distillate (DD) on the retention of rice phytochemicals in the unevaporated fraction (UMDs), which were then further used as co-surfactants in the fabrication of water-dispersible vesicles. The pilot-scale MD unit was operated at 120, 140 or 160 A degrees C and 0.1 Pa to concentrate rice phytosterols from 1540.8 mg in 100 g DD to 3990.2-4904.8 mg in 100 g UMDs by evaporating out free fatty acids. Although gamma-oryzanol content was increased from 598.9 mg in 100 g DD to 870.0-1018.1 mg in 100 g UMDs when the temperature was raised to 160 A degrees C, such high temperature decreased tocols from 2185.7 mg in 100 g DD to 850.5 mg in 100 g UMDs and antioxidant capacity of UMDs measured as 2,2-diphenyl-1-picrylhydrazyl scavenging capacity. The UMD obtained after distillation at 140 A degrees C was used as co-surfactant with soy lecithin, sucrose palmitate or polyoxyethylene sorbitan monooleate (Tween 80) to fabricate vesicles in pH 7.0 phosphate buffered saline (PBS). This study showed potential use of the UMD as a source of rice phytochemicals and a co-surfactant when used with Tween80 in small vesicle fabrication. The fabricated Tween 80/UMD vesicles in PBS had the size range of 200-300 nm and were stable within a temperature range of 4 to 37 A degrees C for 96 h.
机译:这项研究调查了分子蒸馏(MD)过程中的蒸发温度对除臭剂馏出物(DD)的除味对水稻植物化学物质在未蒸发级分(UMDs)中保留的影响,然后将其进一步用作制造水的助表面活性剂-可分散的囊泡。中试规模的MD装置在120、140或160 A的温度和0.1 Pa的条件下运行,通过蒸发掉游离脂肪酸,将稻米植物甾醇从100 g DD中的1540.8 mg浓缩到100 g UMD中的3990.2-4904.8 mg。尽管将温度升高到160 A时,γ-谷维素含量从100 g DD中的598.9 mg增加到100 g UMD中的870.0-1018.1 mg,但这种高温将母育酚从100 g DD中的2185.7 mg降低到850.5 mg。 100克UMD和UMD的抗氧化能力以2,2-二苯基-1-吡啶并肼基清除能力测量。在140 A的温度下蒸馏后获得的UMD与大豆卵磷脂,蔗糖棕榈酸酯或聚氧乙烯脱水山梨糖醇单油酸酯(Tween 80)一起用作辅助表面活性剂,以在pH 7.0磷酸盐缓冲盐水(PBS)中制备囊泡。这项研究表明,当与Tween80一起用于小囊泡制造中时,UMD可以潜在地用作水稻植物化学物质和辅助表面活性剂的来源。在PBS中制备的Tween 80 / UMD囊泡的大小范围为200-300 nm,并且在4至37 A的温度范围内稳定96小时。

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