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贵州不同油茶物种及产地对油茶籽油品质的影响Influence of different species and origins on quality of oil-tea camellia seed oil in Guizhou

open access: yesZhongguo youzhi, 2022
为探究贵州不同油茶的生产适应性,分析贵州本土油茶物种与普通油茶的差异性,研究不同产地对油茶籽油品质的影响,对贵州2个主要油茶物种(威宁短柱油茶、西南红山茶)和3个主要产地(贵阳、平塘、册亨)的普通油茶籽仁含油率及其制取油脂的理化特性、脂肪酸组成与活性物质含量进行检测,应用聚类分析和主成分分析进行综合评价。结果表明,威宁短柱油茶和西南红山茶籽仁的含油率较高,分别达到了57.76%和56.08%,与普通油茶差异显著(p<0.05)。各物种及产地的油茶籽油不饱和脂肪酸相对含量差异不显著(p>0.05 ...
刘海, 王进, 许杰, 陈瑶, 缪明胜, 郭少海 LIU Hai, WANG Jin, XU Jie, CHEN Yao, MIAO Mingsheng, GUO Shaohai
doaj   +1 more source

油茶籽油质量安全生产技术规范的探讨Discussion on quality and safety production technical specification of oil-tea camellia seed oil

open access: yesZhongguo youzhi, 2022
为促进油茶籽油的安全生产,针对目前部分油茶籽油产品中存在的苯并(a)芘、塑化剂等有害物质含量超标,品质不稳定,功能性营养物质流失等问题,通过对油茶籽油加工技术的深入调研,分析了油茶籽油质量安全生产技术的现状,提出了油茶籽油质量安全生产技术规范,包括油茶果前处理,油茶籽预处理、压榨,油脂浸出,油脂精炼,油脂包装、储存与运输等各生产加工过程的技术规范,以及生产技术管理、技术培训、设备与生产场所管理方面的技术规范。油茶籽油质量安全生产技术规范的提出,可以实现产品的标准化 ...
魏冰1,李红霞1,孟橘1,杨敏1, 赖琼玮2,陈志红3 WEI Bing1,LI Hongxia1,MENG Ju1,YANG Min1,LAI Qiongwei2,CHEN Zhihong3
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产地、物种及加工工艺对油茶籽油中的微量元素 及重金属含量的影响Effects of origins,species and processing technology on contents of trace elements and heavy metals in oil-tea camellia seed oil

open access: yesZhongguo youzhi, 2022
以贵州不同产地及物种的油茶籽为原料,分别采用烘制和炒制对其进行预处理后压榨制油,并对油茶饼进行二次压榨制油,对不同预处理及不同压榨阶段油茶籽油的微量元素及重金属含量进行分析。结果表明:不同产地和物种的油茶籽油的微量元素及重金属含量存在不同程度的差异,形成不同品质特征的油茶籽油;与烘制预处理相比,炒制可以显著提升油茶籽油中锰、铁、铜含量(P<0.05),但同时增加油茶籽油中的重金属含量;不同压榨阶段油茶籽油的微量元素含量具有显著差异(P<0.05),二次压榨可使油茶籽油中的锰和铁含量显著增加(P<0.05)
刘海,王进,许杰,陈瑶,缪明胜,郭少海 LIU Hai, WANG Jin, XU Jie, CHEN Yao, MIAO Mingsheng, GUO Shaohai
doaj   +1 more source

Melanogenesis Inhibitory and Antioxidant Effects of Camellia oleifera Seed Oil [PDF]

open access: yesAdvanced Pharmaceutical Bulletin, 2017
Objectif : L'étude visait à caractériser le profil d'acides gras de l'huile de graines de Camellia oleifera (thé) et à évaluer la cytotoxicité et les activités sur les tests de mélanogenèse et d'activité antioxydante afin de les utiliser comme huile fonctionnelle. Méthodes : Le profil en acides gras de l'huile a été analysé par chromatographie en phase
Puxvadee Chaikul   +4 more
openaire   +3 more sources

Optimization of HS-SPME-GC/MS Analysis of Volatile Components in Camellia Seed Oil

open access: yesLiang you shipin ke-ji, 2021
An analysis method for the volatile components of squeezed Camellia oleifera seed oil was established by using automatic sample preparation-headspace solid phase microextraction (HS-SPME)combined with gas chromatography-mass spectrometry (GC/MS ...
YANG Kai-zhou   +7 more
doaj   +1 more source

Identification of miRNA–mRNA Regulatory Modules Involved in Lipid Metabolism and Seed Development in a Woody Oil Tree (Camellia oleifera)

open access: yesCells, 2021
Tea oil camellia (Camellia oleifera), an important woody oil tree, is a source of seed oil of high nutritional and medicinal value that is widely planted in southern China. However, there is no report on the identification of the miRNAs involved in lipid
Bo Wu   +7 more
doaj   +1 more source

Combining GC-MS and chemometrics to assess the quality of camellia seed oils

open access: yesCyTA - Journal of Food, 2021
Chemometric tools and GC-MS were employed to detect the adulteration of camellia seed oil. In the training set, 65 samples were formulated by blending pure camellia seed oil with varying concentrations of soybean, peanut and rapeseed oil and their fatty ...
Simin Peng   +5 more
doaj   +1 more source

油茶鲜果预处理方式对低温压榨油茶籽油品质的影响

open access: yesZhongguo youzhi, 2023
为更 多地保留活性成分,提高油茶籽油品质,研究了油茶鲜果6种不同预处理方式(剥壳-摊晒、直接摊晒、堆沤-摊晒、剥壳-烘干、直接烘干、堆沤-烘干)对油茶籽主要成分以及低温压榨油茶籽油中3种理化指标(酸值、过氧化值、多环芳烃)和4种微量活性成分(维生素E、维生素K1、角鲨烯、多酚)的影响。结果表明:油茶鲜果预处理方式对油茶籽主要成分(脂肪、蛋白质、淀粉)影响不大;6种不同预处理方式对低温压榨油茶籽油的理化指标和微量活性成分均有一定的影响,其中剥壳-烘干处理油茶鲜果在油茶籽油的酸值、多环芳烃、维生素E ...
郝泽金1,2,吴苏喜1,3,蒋明芳1,管业圣2,冯宗义3" HAO Zejin1,2, WU Suxi1,3, JIANG Mingfang1, GUAN Yesheng2, FENG Zongyi3"
doaj   +1 more source

不同工艺山茶油在储藏过程中品质变化Quality changes of oil-tea camellia seed oil with different processing techniques during storage

open access: yesZhongguo youzhi, 2023
旨在为山茶油的加工和储藏提供参考,采用Schaal烘箱法对4种工艺山茶油加速氧化,测定山茶油在储藏过程中酸值、过氧化值、p-茴香胺值、脂肪酸、甘油酯以及脂质伴随物的变化情况,并对山茶油质量指标与脂质伴随物进行Pearson相关性分析。结果表明:4种工艺山茶油在储藏过程中的酸值略微升高,上升为初始值的1.09~2.60倍;过氧化值、p-茴香胺值迅速上升,分别上升为初始值的10.31~16.49倍和3.06~4.43倍;α-生育酚含量大幅度下降,损失率为96.19%~100.00%,而角鲨烯 ...
曾晶1,王卫飞2,陈莹1,刘萱1,戚穗坚1,杨博3,王永华1 ZENG Jing1, WANG Weifei2, CHEN Ying1,LIU Xuan1, QI Suijian1, YANG Bo3, WANG Yonghua1
doaj   +1 more source

油茶籽油挥发性风味物质研究进展

open access: yesZhongguo youzhi, 2023
风味是油茶籽油的重要品质特征之一,为揭示油茶籽油挥发性特征风味物质的产生规律和机制,对油茶籽油挥发性风味物质及其影响因素的国内外研究进展进行综述。油茶籽油中主要的挥发性风味物质包括醛类、酯类、杂环类、酚类及萜烯类等,这些物质赋予了油茶籽油特有的青香、果香、焙烤香等风味特征。影响油茶籽油挥发性风味物质组成的因素有原料品种、原料产地、生产工艺及储存等。不同品种和产地的油茶籽油挥发性风味物质种类和含量差异较大。油茶籽油加工过程中,预处理温度对挥发性风味物质的形成影响较大 ...
刘海,王进,许杰,郭少海,陈瑶,朱亚艳,李慧LIU Hai, WANG Jin, XU Jie, GUO Shaohai,CHEN Yao, ZHU Yayan, LI Hui
doaj   +1 more source

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