共查询到19条相似文献,搜索用时 187 毫秒
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对盐地碱蓬籽的基本成分、盐地碱蓬籽油的部分理化特性进行了分析,并利用气相色谱仪测定了其脂肪酸组成。结果表明:盐地碱蓬籽油中的不饱和脂肪酸含量较高(约75%),主要为10.79%油酸、58.84%亚油酸和4.91%亚麻酸;采用胰脂酶水解方法对盐地碱蓬籽油的Sn-2位脂肪酸组成进行分析,并通过1,3-随机-2-随机分布学说计算得出盐地碱蓬籽油的甘三酯主要以LLL(20.36%)、LLP(15.22%)、LLO(10.22%)和POL(7.20%)的形式存在,用高效液相色谱测得盐地碱蓬籽油中维生素E含量为0.81 mg/g。 相似文献
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为了开发和利用盐地碱蓬籽油,用溶剂萃取法从盐地碱蓬籽中提取油脂,然后用GE/MS分析其中的脂肪酸组成及其相对含量,并对盐地碱蓬籽油的碘值、酸值、皂化值等理化指标进行测定,结果表明:盐地碱蓬籽含油量20.12%;盐地碱蓬籽油碘值(Ⅰ)176.4 g/100 g,酸值(KOH)1.84 mg/g,皂化值(KOH)194.6 mg/g;Ak碱蓬籽油检出7种脂肪酸,不饱和脂肪酸占90.65%,其中亚油酸占68.74%,油酸占13.93%,亚麻酸占4.17%.分析结果表明,盐地碱蓬籽油是一种高品质的保健油脂. 相似文献
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红麻籽油脂肪酸成分分析及其亚油酸富集工艺的研究 总被引:2,自引:1,他引:1
红麻籽油是一种典型的油酸-亚油酸型油脂,本文通过气相色谱法分析两个高亚油酸红麻品种籽油脂肪酸成分,结果表明,金光1号籽油含软脂酸17.31%、硬脂酸1.67%、油酸28.13%、亚油酸51.81%、亚麻酸1.09%:福红952籽油含软脂酸20.51%、硬脂酸2.86%、油酸28.72%、亚油酸47.20%、亚麻酸0.72%.另外,本研究以尿素包和法富集红麻亚油酸,通过L9(34)正交试验优化其富集工艺条件,结果表明,尿素包合法富集红麻籽油亚油酸的最佳工艺条件条件是:W脂肪酸:W尿素:V乙醇=1:2:8,在0℃条件下结晶12 h,富集后亚油酸含量提高到83.7%,收率达到56.4%,基本符合富集效果,为红麻食用保健油研发及其产业化奠定良好的工作基础. 相似文献
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《食品安全质量检测学报》2015,(4)
目的明确牡丹种皮油的脂肪酸组成及相对含量,并与牡丹籽油和4种常见干果(核桃、巴旦木、杏仁、开心果)的脂肪酸组成进行比较,为牡丹种皮油的开发利用提供科学依据。方法采用索氏抽提法对4种干果中的脂肪进行提取,以硫酸-甲醇法对6种油脂样品甲酯化,采用GC-MS检测结合峰面积归一化法测定脂肪酸的组成及相对含量。结果牡丹种皮油与牡丹籽油中均含有棕榈酸、棕榈油酸、油酸、亚油酸、亚麻酸5种脂肪酸,其不饱和脂肪酸比例均超过90%,尤其是亚麻酸的含量分别高达51.1%和44.7%;而核桃中含有棕榈酸、油酸、亚油酸、亚麻酸4种脂肪酸,亚油酸是其主要成分;巴旦木、杏仁、开心果中主要含有棕榈酸、油酸、亚油酸3种脂肪酸,以单不饱和脂肪酸油酸含量最高。结论牡丹种皮油中含有大量多不饱和脂肪酸,其中亚麻酸的含量尤其突出,较牡丹籽油含量更高,是一种优质的保健食用油。 相似文献
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摘 要: 目的 明确牡丹种皮油的脂肪酸组成及相对含量,并与牡丹籽油和4种常见干果(核桃、巴旦木、杏仁、开心果)的脂肪酸组成进行比较,为牡丹种皮油的开发利用提供科学依据。方法 采用索氏抽提法对4种干果中的脂肪进行提取,以硫酸-甲醇法对6种油脂样品甲酯化,采用GC-MS检测结合峰面积归一化法测定脂肪酸的组成及相对含量。 结果 牡丹种皮油与牡丹籽油中均含有棕榈酸、棕榈油酸、油酸、亚油酸、亚麻酸5种脂肪酸,其不饱和脂肪酸比例均超过90%,尤其是亚麻酸的含量分别高达51.1%和44.7%;而核桃中含有棕榈酸、油酸、亚油酸、亚麻酸4种脂肪酸,亚油酸是其主要成分;而巴旦木、杏仁、开心果中主要含有棕榈酸、油酸、亚油酸3种脂肪酸,以单不饱和脂肪酸油酸含量最高。 结论牡丹种皮油中含有大量多不饱和脂肪酸,其中亚麻酸的含量尤其突出,较牡丹籽油含量更高,是一种优质的保健食用油。 相似文献
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气相色谱-质谱法测定黑豆果籽脂肪酸含量 总被引:2,自引:0,他引:2
采用气相色谱-质谱法对黑豆果籽脂肪酸组成及含量进行研究,鉴定出其含棕榈酸、硬脂酸、油酸、亚油酸、α-亚麻酸、γ-亚麻酸、哥伦比酸、二十碳酸、二十碳一烯酸、二十碳二烯酸;主要组分油酸占14.8%,亚油酸占42.8%,α-亚麻酸占14.7%,γ-亚麻酸占13.8%,不饱和脂肪酸总量达90.4%,特别是γ-亚麻酸相对含量较高,黑豆果籽具有很高保健价值和良好开发前景。 相似文献
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对甘肃产亚麻籽油与其它6种小品种食用油脂肪酸的组成成分进行测定,结果表明,亚麻籽油中α-亚麻酸含量最高(平均值为54.1%),其次是油酸(平均值为24.25%);紫苏油、牡丹籽油、松子油不饱和脂肪酸含量高,其中松子油的单不饱和脂肪酸含量最高,紫苏油的多不饱和脂肪酸含量最高,南瓜籽油二十二碳六烯酸(DHA)平均含量0.106%,御米油二十碳五烯酸(EPA)平均含量0.242%。硬脂酸、棕榈酸、油酸、亚油酸和α-亚麻酸是构成甘肃地产亚麻籽油的特征脂肪酸。甘肃产亚麻籽油的ω-3系脂肪酸与ω-6系多不饱和脂肪酸的比是1.6∶0.4,仅次于紫苏油,是健康饮食的高品质油脂。 相似文献
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Luz Magali Álvarez-Chávez María de los Angeles Valdivia-López María de Lourdes Aburto-Juárez 《International Journal of Food Properties》2013,16(3):687-697
The lipid fraction of Jalisco and Sinaloa chia seeds was analyzed for oil content, fatty acids, squalene and phytosterols. The mean oil content of seeds from these two regions was significantly (p ≤ 0.05) different, but with a similar composition of α-linolenic, linoleic, oleic, palmitic and stearic acids. Total phytosterols in the oil ranged from 7 to 17 g/kg. β-sitosterol accounted for up to 74% of the total unsaponified fraction. The seeds contained less than 0.5 g/kg of squalene. The oil is an attractive source of ω-3 linolenic acid and phytosterols but a poor source of squalene. 相似文献
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A chemotaxonomic screening of the seed oil fatty acids of 22 common, edible berry species belonging to 13 genera (Vaccinium, Oxycoccus, Arctosta-phylos, Empetrum, Hippophaë, Chamaepericlymenum, Sambucus, Rosa, Fragaria, Rubus, Sorbus, Prunusand Ribes) that grow wild in northern Europe was carried out. The highest oil content in the seeds (≈30% d.w.) was measured in Vaccinium, Oxycoccusand Sambucus, and the lowest in Arctostaphylos, Empetrum, Rosaand Chamaepericlymenumspecies (<10% d.w.). The smaller the seed of a berry species within a genus, the higher was the oil content. The mass of 100 seeds varied from 10?mg (V. myrtillus) to 2950?mg (P. padus). Fatty acids of triacylglycerols were analysed as methyl esters by gas chromatography. Typically the most abundant fatty acids were linoleic, α-linolenic, oleic and palmitic acids. Exceptions were S. aucupariaand P. padus,which contained hardly any α-linolenic acid. Currants (Ribes nigrum, Ri. spicatumand Ri. alpinum) also contained γ-linolenic acid (11–16?mol%) and stearidonic acid (3–6?mol%). The content and composition of the seed oil of various berry species within the same genus, or within the same family, were similar, thus supporting the commonly accepted taxonomic classification. 相似文献
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Clary sage seeds (Salvia sclarea L.) were obtained from plants cultivated, and 2.5, 4.0, 5.5, and 7.0 kGy doses of γ-irradiation were applied to the clary sage seeds. They were then analyzed for their protein, ash, oil and dry matter contents, and fatty acid composition. Additionally, the total phenolic contents, antiradical, antioxidant activities, and volatile compounds of the clary sage seed extract were determined. There was no significant difference in protein content. However, the moisture, oil, and ash contents of the samples were affected by irradiation. While the 7 kGy dose had a positive effect on the total phenolic content and antiradical activity of the sage seed extract, all doses have negative effects on the antioxidant activity of the sage seed. The main fatty acid of the sage seed was remarkably found as α-linolenic acid. The four irradiation levels caused significant differences in fatty acid composition by affecting all fatty acids except palmitic, palmitoleic, and eicosenoic acids. The dominant volatile compounds of control sage seed were found as β-pinene (18.81%) and limonene (15.60%). Higher doses of the irradiation decreased volatile components of sage seed. Clary sage seed including high omega-3 can be irradiated with low doses (≤ 2.5 kGy) of γ-irradiation. PRACTICAL APPLICATION: Clary sage is one of the most popular Salvia species in Turkey and many countries. Clary sage seed has approximately 29% oil content and this oil contains >50% of α-linolenic acid. γ-Irradiation is widely applied in the preservation of spice quality. The present study shows that the antioxidant activity of the clary sage seed is decreased by γ-irradiation. Additionally, higher doses of irradiation also decreased the volatile components of sage seed. Therefore, we suggest that clary sage seed which includes high levels of omega-3 should be irradiated with low doses (≤ 2.5 kGy) of γ-irradiation. 相似文献
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本文研究了枳棋籽油中α-亚麻酸的富集纯化及工艺。通过正交试验确定了最佳的皂化工艺条件:以乙醇为皂化介质,皂化比例为1:6.0,皂化温度为45℃,皂化时间为30min。采用尿素包合法对枳棋籽油中α-亚麻酸的富集纯化及工艺条件进行了研究,结果表明:以丙酮为尿包介质、尿包比例为1:4、尿包温度为0℃、尿包时间为10h,枳棋籽油中α-亚麻酸的纯度可提高到80.36%,收率在60%以上。 相似文献
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本文研究了枳椇籽油中α-亚麻酸的富集纯化及工艺.通过正交试验确定了最佳的皂化工艺条件:以乙醇为皂化介质,皂化比例为1∶6.0,皂化温度为45℃,皂化时间为30 min.采用尿素包合法对枳椇籽油中α-亚麻酸的富集纯化及工艺条件进行了研究,结果表明:以丙酮为尿包介质、尿包比例为1∶4、尿包温度为0℃、尿包时间为10h,枳椇... 相似文献
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