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首页> 外文期刊>Industrial Crops and Products >Composition and physical properties of cress (Lepidium sativum L.) and field pennycress (Thlaspi arvense L.) oils
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Composition and physical properties of cress (Lepidium sativum L.) and field pennycress (Thlaspi arvense L.) oils

机译：水芹油（Lepidium sativum L.）和田间豆瓣油（Thlaspi arvense L.）油的组成和物理性质

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摘要

The fatty acid profiles and tocopherol and phytosterol contents of crude oils of cress (Lepidium sativum L.) and field pennycress (Thlaspi arvense L.) are reported, along with yields from the corresponding seeds. The physical properties of these oils were also determined, which included oxidative stability, kinematic viscosity, viscosity index, low temperature fluidity, specific gravity, acid value, lubricity, and iodine value. The oil content of dried cress and field pennycress seeds was 22.7 and 29.0wt%, respectively. The primary fatty acids found in cress oil were oleic (30.6wt%) and linolenic acids (29.3wt%), whereas field pennycress oil was principally composed of erucic (32.8wt%) and linoleic (22.4wt%) acids. Cress oil contained high concentrations of d- (1422ppm) and t- (356ppm) tocopherols, whereas l-tocopherol (714ppm) was the primary tocopherol discovered in field pennycress oil. The overall tocopherol concentrations of cress and field pennycress oils were 1799 and 851ppm, respectively. The primary phytosterols elucidated in cress and field pennycress oils were sitosterol and campesterol, with avenasterol also present in significant quantity in cress oil. The total phytosterol concentration in cress oil (14.41mg/g) was greater than that in field pennycress (8.55mg/g) oil. Field pennycress oil exhibited excellent low temperature fluidity, whereas cress oil was more stable to oxidation and over a range of temperatures displayed lower kinematic viscosities as well as a higher viscosity index. The acid and iodine values of field pennycress oil were lower than those for cress oil, but both oils had excellent lubrication properties.
机译：报告了水芹（Lepidium sativum L.）和田pen豆（Thlaspi arvense L.）原油的脂肪酸谱，生育酚和植物甾醇含量，以及相应种子的产量。还确定了这些油的物理性质，包括氧化稳定性，运动粘度，粘度指数，低温流动性，比重，酸值，润滑性和碘值。干燥的水芹和田间小豆瓣种子的含油量分别为22.7wt％和29.0wt％。水芹油中发现的主要脂肪酸为油酸（30.6wt％）和亚麻酸（29.3wt％），而田间小叶芹油主要由芥酸（32.8wt％）和亚油酸（22.4wt％）组成。水芹油中含有高浓度的d-（1422ppm）和t-（356ppm）生育酚，而1-生育酚（714ppm）是田野小豆油中发现的主要生育酚。水芹油和田间除草油的生育酚总浓度分别为1799和851ppm。水芹和田间除草油中阐明的主要植物甾醇为谷固醇和菜油甾醇，水芹油中也存在大量的avenasterol。水芹油中植物甾醇的总浓度（14.41mg / g）高于田间小叶芹油（8.55mg / g）。田pen油具有出色的低温流动性，而水芹油对氧化更稳定，并且在一定温度范围内显示出较低的运动粘度和较高的粘度指数。田pen豆油的酸和碘值低于水芹油，但两种油都具有出色的润滑性能。

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