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南方山区发展油茶潜力大 被引量:4
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作者 查福恩 《林业实用技术》 北大核心 2004年第5期35-35,共1页
关键词 南方山区 茶子树 幼林抚育 病虫害防治
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油茶生产发展前景广阔——湖南省油茶生产的预测 被引量:1
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作者 汤标中 《预测》 1982年第1期59-,43,共2页
油茶是我国特有的木本油料,又名叫茶子树,为常绿乔木,属于茶科。生产在我国气候温和、雨量充足的南方各地。目前,全国油茶面积有5000多万亩,1979年油茶籽产量为12.34亿斤,占油料总产量的6.1%。湖南省的油茶面积、产量均为全国之最,其... 油茶是我国特有的木本油料,又名叫茶子树,为常绿乔木,属于茶科。生产在我国气候温和、雨量充足的南方各地。目前,全国油茶面积有5000多万亩,1979年油茶籽产量为12.34亿斤,占油料总产量的6.1%。湖南省的油茶面积、产量均为全国之最,其次是江西省。浙江、广西、云南、贵州、四川、湖北、福建等省,也有成片种植。从全国油茶重点产区湖南省来看,目前油茶单位面积产量不高,产量增长缓慢,优势尚未发挥出来,已成为农业生产中的一个薄弱环节。主要表现在:一是近三、四年来。 展开更多
关键词 湖南省 生产 生产发展 油产量 最高年产量 主要表现 增长缓慢 木本油料 茶子树
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油茶种植 被引量:1
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《农村新技术》 2017年第S1期64-66,共3页
油茶,别名茶子树,又名木子树,是指山茶属植物中油脂含量较高且具有一定栽培价值的木本油料植物的总称,包括油茶和茶叶两大类。根据其经济性状的不同,常说的茶油是指采收茶子树的油茶籽提炼的油。现将其种植效益分析如下。一、市场前景... 油茶,别名茶子树,又名木子树,是指山茶属植物中油脂含量较高且具有一定栽培价值的木本油料植物的总称,包括油茶和茶叶两大类。根据其经济性状的不同,常说的茶油是指采收茶子树的油茶籽提炼的油。现将其种植效益分析如下。一、市场前景茶油富含维生素E、脂肪酸和山茶苷,不饱和脂肪酸含量达85%以上,居各种植物油之冠,有'东方橄榄油'之称。 展开更多
关键词 种植 茶子树 林地 油市场
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侗家打油茶趣谈
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作者 吴善诚 《农业考古》 1992年第2期85-86,共2页
油茶,是侗族人民喜爱吃的一种饮料,一日三餐少不了。油茶有两种解释;一是指一种木本油料的树,也叫“油茶树”或“茶子树”,结下的果实叫茶果,果熟籽落,落下的籽叫茶子,形似小板栗,用茶子榨出的油汁叫茶油,侗家叫“油茶”,打油茶就少不... 油茶,是侗族人民喜爱吃的一种饮料,一日三餐少不了。油茶有两种解释;一是指一种木本油料的树,也叫“油茶树”或“茶子树”,结下的果实叫茶果,果熟籽落,落下的籽叫茶子,形似小板栗,用茶子榨出的油汁叫茶油,侗家叫“油茶”,打油茶就少不了它。二是指一种饮料的名称,这种食品的制作过程就叫做“打油茶”。这两种茶的叶子相似,果子也有些相同,人称它俩是“孪生姐妹”,不同的是前一种是种在高山岭顶上,叶子不能吃用。后一种是种在村边的园子里,叶子是打油茶的主要原料。 展开更多
关键词 木本油料 叶子 侗族 茶子树 饮料 制作过程 侗乡 主要原料
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Difference Analysis on Contents of Gallic Acid and Catechins of Tea Resources from Yunnan Province 被引量:3
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作者 罗向前 王家金 +6 位作者 孙雪梅 李友勇 刘本英 汪云刚 宋维希 马玲 周玉忠 《Agricultural Science & Technology》 CAS 2012年第12期2502-2506,2614,共6页
[Objective] This study aimed to analyze the difference in the contents of gallic acid and catechins of tea resources from Yunnan Province. [Method] By using high performance liquid chromatography (HPLC), the content... [Objective] This study aimed to analyze the difference in the contents of gallic acid and catechins of tea resources from Yunnan Province. [Method] By using high performance liquid chromatography (HPLC), the contents of gallic acid (GA), catechins (C), epicatechin (EC), epigallocatechin (EGC), epicatechin gallate (ECG) and epigallocatechin gallate (EGCG) of 121 tea germplasms from the China National Germplasm Tea Repositories (CNGTR) at the Tea Research Institute of Yunnan Academy of Agricultural Sciences (TRIYAAS) were measured. [Result] The content of GA ranged from 0.210% to 1.902%, with an average of 0.834%, explaining rela- tively low GA content among tea germplasms. The content of C ranged from 0.069% to 8.865%, with an average of 1.916%. The content of EC ranged from 0.126% to 2.865%, with an average of 1.112%. The content of EGC ranged from 0.00% to 3.709%, with an average of 0.954%. The content of ECG ranged from 0.739% to 8.957%, with an average of 4.063%. The content of EGCG ranged from 0.819% to 11.77%, with an average of 5.939%. The content of total C ranged from 6.354% to 22.654%, with an average of 14.042%. [Conclusion] There was relatively big difference of catechin contents among different tea resources, indicating that there was plentiful biodiversity of Yunnan tea germplasms. At the same time, three tea germplasms with high epigallocatechin gallate content (≥10%) was selected preliminarily, which would provide important materials for breeding tea cultivars with high EGCG content in the future. 展开更多
关键词 Yunnan Province Tea germplasm Gallic acid CATECHINS DIFFERENCE
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Preparation of high molecular weight (HMW) genomic DNA from tea plant (Camellia sinensis) for BAC library construction 被引量:1
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作者 LIN Jin-ke Dave Kudrna Rod A Wing 《Journal of Agricultural Science and Technology》 2009年第1期1-10,共10页
A bacterial artificial chromosome (BAC) library is an invaluable resource tool to initiate tea plant genomics research, and the preparation of high molecular weight (HMW) genomic DNA is a crucial first step for co... A bacterial artificial chromosome (BAC) library is an invaluable resource tool to initiate tea plant genomics research, and the preparation of high molecular weight (HMW) genomic DNA is a crucial first step for constructing a BAC Library. In order to construct a BAC library for enhancing tea plant genomics research, a new method for the preparation of tea pant high molecular weight (HMW) genomic DNA must be developed due to young tea plant leaves and shoots are notably rich in both tea polyphenols and tea polysaccharides. In this paper, a modified method for preparing high quality tea plant HMW genomi~ DNA was optimized, and the quality of tea plant genomic DNA was evaluated. The results were as follows: Critical indicators of HMW DNA preparation were the appearance of the smooth nuclei in solution (as opposed to sticky-gummy) before agarose plug solidification, non-dark colored nuclei plugs after lysis with an SDS/proteinase K solution, and the quality and quantity of HMW DNA fragments after restriction enzyme digestion. Importantly, 1% dissolved PVP-40 and 1% un-dissolved PVP-40 during the nuclei extraction steps, in conjunction with the removal of PVP-40 from the plug washing and nuclei lysis steps, were critical for achieving HWM tea plant DNA suitable for BAC library construction. Additionally, a third PFGE fraction selection step to eliminate contaminating small DNA fragments. The modifications provided parameters that may have prevented deleterious interactions from tea polyphenols and tea polysaccharides. The HMW genomic DNA produced by this new modified method has been used to successfully construct a large-insert tea plant BAC library, and thus may be suitable for BAC library construction from other plant species that contain similarly interfering compounds. 展开更多
关键词 tea plant bacterial artificial chromosome library BAC clone tea polyphenols high molecular weight genomic DNA preparation Camellia sinensis
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Influence of epigallocatechin gallate on the immune function of dendritic cells after ultraviolet B irradiation
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作者 DAN LUO, BING RONG ZHOU XIJI 《Journal of Microbiology and Immunology》 2007年第2期90-98,共9页
To investigate the protective effect of epigallocatechin gallate (EGCG) on the immune function of dendritic cells (DCs) after ultraviolet B irradiation (UVB) and its underlying mechanisms, the monocytes were iso... To investigate the protective effect of epigallocatechin gallate (EGCG) on the immune function of dendritic cells (DCs) after ultraviolet B irradiation (UVB) and its underlying mechanisms, the monocytes were isolated from peripheral blood and cultivated into DCs with cytokines, such as GM-CSF and IL-4. DCs were harvested after cultivation for 7 d and subjected to irradiation with different dosages of UVB. Then, 200 μg/ml of EGCG were added in certain groups immediately after irradiation. DCs simply treated with UVB or treated with both UVB and EGCG were co-cultured with lymphocytes, and MTT assay was used to detect the ability of DCs to stimulate proliferation of lymphocytes. Surface markers CDS0, CD86, HLA-DR and CD40 were detected by flow cytometry, and the levels of IL-10 and IL-12 secreted from DCs 2d h after cultivation were measured by ELISA. It was demonstrated that UVB irradiation could inhibit the ability of DCs to stimulate the proliferation of lymphocytes and surface expressions of CDS0, CD86, HLA-DR and CD40 on DCs in a dose-dependent manner. The inhibition rate of DCs was improved to some extent after treatment with 200μg/ml of EGCG. When the concentra- tion of EGCG exceeded 100 μg/ml, the enhancing effect of EGCG on the expression of the co-stimulating molecules on DCs could be demonstrated in a dose-dependent manner. UVB showed no significant influence on the secretion of IL-10 and IL-12 from DCs, while EGCG could down-regulate the secretion level of IL-12 and up-regulate that of IL-10. It is concluded that EGCG can antagonize the inhibitory effect on DCs induced by UVB irradiation. This function has some relationship with its protecting effect of the expression of the co-stimulating molecule on the surface of DCs and the secretion level of IL-10 and IL-12. 展开更多
关键词 Epigalloeatechin gallate Ultraviolet B Dendritic cells
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茶油护发,玫瑰传芳
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作者 孟晖 《缤纷》 2007年第3期38-39,共2页
称少年。裁缝长短不能定,自持刀尺向姑前。复恐兰膏污纤指,常遣傍人收堕珥。衣裳著时寒食下,还把玉鞭鞭白马。羞涩与含蓄,真是有很入微的观察。——虽然是这样传统的婚姻,但是并不妨碍女主人公对于新婚夫婿的一腔感情,这种感情不是通过... 称少年。裁缝长短不能定,自持刀尺向姑前。复恐兰膏污纤指,常遣傍人收堕珥。衣裳著时寒食下,还把玉鞭鞭白马。羞涩与含蓄,真是有很入微的观察。——虽然是这样传统的婚姻,但是并不妨碍女主人公对于新婚夫婿的一腔感情,这种感情不是通过语言,而是通过最细心的体贴流露出来。忙碌中, 展开更多
关键词 橄榄油 头油 护发 玫瑰油 明清时代 茉莉花 芝麻香油 茶子树 中国女性
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油茶高产栽培技术
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作者 温华英 王燕红 《农民科技培训》 2009年第3期33-34,共2页
油茶又叫茶子树,是我国南方主要木本油料树种,已有2000多年的栽培历史。茶油天然清香,属不干性油,不含胆固醇,不含黄曲霉素,含丰富的不饱和脂肪酸,在植物油中茶油碘值最低,所以其液体油性最稳定,不易氧化,是最好的食用油之一。茶油除食... 油茶又叫茶子树,是我国南方主要木本油料树种,已有2000多年的栽培历史。茶油天然清香,属不干性油,不含胆固醇,不含黄曲霉素,含丰富的不饱和脂肪酸,在植物油中茶油碘值最低,所以其液体油性最稳定,不易氧化,是最好的食用油之一。茶油除食用外,还是制作肥皂、凡士林、 展开更多
关键词 科技教育培训 梅州 茶子树 根腐病 软腐病 食用油
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