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催化动力学光度法测定痕量锰——Mn(Ⅱ)-NTA-茜素紫3B-KIO_4体系 被引量:2
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作者 徐锁平 《光谱实验室》 CAS CSCD 2002年第4期502-504,共3页
在硼砂介质中 ,利用氨三乙酸活化 Mn( )催化 KIO4 氧化茜素紫 3B褪色的指示反应 ,建立了催化光度法测定痕量锰的新方法。方法的线性范围为 0 .0 30— 6 .0μg/ L ,检出限为 1.0× 10 -11g/ m L ,用于水样和茶叶中锰的测定 ,结果令... 在硼砂介质中 ,利用氨三乙酸活化 Mn( )催化 KIO4 氧化茜素紫 3B褪色的指示反应 ,建立了催化光度法测定痕量锰的新方法。方法的线性范围为 0 .0 30— 6 .0μg/ L ,检出限为 1.0× 10 -11g/ m L ,用于水样和茶叶中锰的测定 ,结果令人满意。 展开更多
关键词 催化动力学光度法 测定 水-茶叶 高碘酸钾 氨三乙酸 痕量分析 茜素紫3B
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Adsorption Dynamics of Calyx Aroma onto Basic Tea in Scenting Process of Calyx-scented Tea 被引量:1
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作者 陈昌辉 《Agricultural Science & Technology》 CAS 2012年第9期2017-2020,共4页
[Objective] The paper was to study adsorption dynamics of calyx aroma onto basic tea in scenting process of calyx-scented tea, so as to increase aroma and quality of products. [Method] Adsorption experiment was carrie... [Objective] The paper was to study adsorption dynamics of calyx aroma onto basic tea in scenting process of calyx-scented tea, so as to increase aroma and quality of products. [Method] Adsorption experiment was carried out in a hermetic container, and the effect of calyx amount, contact time, moisture content of basic tea and temperature on the scenting process was studied. [Result] The optimal moisture and temperature for scenting process was 4% and 10 ℃, respectively. [Conclusion] The scenting process accorded pseudo-first-order kinetic model, and the adsorption dynamic data of total process could better fit pseudo-second-order kinetic model. 展开更多
关键词 TEA Odor and taste threshold KINETIC ADSORPTION Sensory panel Calyxcanthus
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Effects of Bacillus amyloliquefaciens Biofertilizer on Tea Yield and Quality 被引量:3
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作者 白志辉 周晨光 +3 位作者 曹建喜 徐圣君 吴尚华 李德生 《Agricultural Science & Technology》 CAS 2014年第11期1883-1887,共5页
[Objective] This study was aimed to explore the effects of Bacil us amy-loliquefaciens biofertilizer on tea yield and quality. [Method] The field plot experiment was conducted with the biofertilizer treatments and con... [Objective] This study was aimed to explore the effects of Bacil us amy-loliquefaciens biofertilizer on tea yield and quality. [Method] The field plot experiment was conducted with the biofertilizer treatments and control to investigate 100-bud weight and main biochemical components. [Result] The treatments by Bacil us amy-loliquefaciens biofertilizer, which was fermented using sweet potato starch wastewa-ter (SPSW) as culture medium, improved 100-bud weight and tea quality significant-ly under the concentration of 0.8×108, 1.6×108 and 3.2×108 cfu/ml with the dose of 1 L/m2 for 4 times. At the optimum concentration of 1.6 ×108 cfu/ml, the biofertilizer treatment increased the 100-bud weight by 22.3%, water extracting materials by 21.9%, amino acids content by 8.83%, tea polyphenol content by 9.76%, and de-creased theine content by 8.32%, respectively. Compared with the control, there was no significant difference between the SPSW treatment and the control. [Con-clusion] The production of the B. amyloliquefaciens biofertilizer could consume SP-SW, and the application of the biofertilizer could improved the tea yield and quality, which provided references for the development of ecological agriculture. 展开更多
关键词 Bacil us amyloliquefaciens Sweet potato starch wastewater Tea 100-bud weight Amino acid
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