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LC—MS/MS法测定牛肉中玉米赤霉醇的残留 被引量:1
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作者 张晓东 朱叶青 朱惠珍 《北方药学》 2008年第3期13-15,共3页
目的:建立动物源性食品牛肉中玉米赤霉醇的残留分析方法。方法:采用叔丁基甲醚溶剂提取牛肉中玉米赤霉醇的残留,以乙腈-水(70:30)为流动相,流速0.8ml,进样量50μl,经高效液相色谱分离,以多反应监测(MRM)测定。结果:本方法... 目的:建立动物源性食品牛肉中玉米赤霉醇的残留分析方法。方法:采用叔丁基甲醚溶剂提取牛肉中玉米赤霉醇的残留,以乙腈-水(70:30)为流动相,流速0.8ml,进样量50μl,经高效液相色谱分离,以多反应监测(MRM)测定。结果:本方法在0.5—6.25ng/ml内线性良好(r=0.9998);检出限0.2μg/kg;方法回收率为80.45%,RSD为3.21%。结论:本方法稳定、可靠、准确,可用于动物源性食品牛肉中玉米赤霉醇的残留分析方法。 展开更多
关键词 液相色谱-串联质谱牛肉 玉米赤食品安全
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某些醛的硫代糠酰肼缩合物的合成和抑真菌作用
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作者 孙作民 李晓荣 《安康学院学报》 1989年第Z1期79-81,共3页
真菌对人类有好多益处。但也有害处。它常引起食品霉变和工业产品的霉腐变质。据统计,世界每年收获的粮食中,由于真菌的霉坏变质而不能食用的占全部产量的2%。我国每年约有10%的柑桔因霉坏而损失;在纤维织品中,仅美国的粗略统计每年... 真菌对人类有好多益处。但也有害处。它常引起食品霉变和工业产品的霉腐变质。据统计,世界每年收获的粮食中,由于真菌的霉坏变质而不能食用的占全部产量的2%。我国每年约有10%的柑桔因霉坏而损失;在纤维织品中,仅美国的粗略统计每年损失在霉腐上的约有2—5亿美元;英国每年木制品腐烂损失约值3—4亿美元。 展开更多
关键词 糠酰 抑真菌作用 缩合物 硫代 腐变质 食品霉 化合物 糠醛 针状 害处
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新型玻璃亟待开发
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《技术与市场》 1997年第7期5-5,共1页
新型玻璃亟待开发目前,我国生产的玻璃品种单一,已不能满足需要,下列玻璃新品亟待开发。灭菌玻璃:在制造玻璃时,加入适量的铜离子,就具有灭菌、防霉功效。用此种玻璃制成器皿盛装食品,能在24小时内杀死所有大肠杆菌和葡萄球菌... 新型玻璃亟待开发目前,我国生产的玻璃品种单一,已不能满足需要,下列玻璃新品亟待开发。灭菌玻璃:在制造玻璃时,加入适量的铜离子,就具有灭菌、防霉功效。用此种玻璃制成器皿盛装食品,能在24小时内杀死所有大肠杆菌和葡萄球菌,还能防止食品霉变。节能玻璃:这种... 展开更多
关键词 新型玻璃 透明导电膜 亟待开发 折光玻璃 节能玻璃 微波炉 耐热玻璃 铜离子 食品霉 明度
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EFFECT OF HIGH-LIPID DIET ON GLOMERULAR MESANGIAL MATRIX IN ADRIAMYCIN-INDUCED NEPHROTIC RATS
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作者 宋红梅 李学旺 +1 位作者 魏珉 朱传酉 《Chinese Medical Sciences Journal》 CAS CSCD 2002年第3期134-139,共6页
OBJECTIVE: To determine the effect of hypercholsterolemia induced by a high-lipid diet on glomerulosclerosis. METHODS: Twenty nephrotic syndrome (NS) Wistar rats administrated adriamycin (ADR) with a single intravenou... OBJECTIVE: To determine the effect of hypercholsterolemia induced by a high-lipid diet on glomerulosclerosis. METHODS: Twenty nephrotic syndrome (NS) Wistar rats administrated adriamycin (ADR) with a single intravenous dose of 5 mg/kg body weight, were divided into the standard and high-lipid chow groups. Another 20 weight-matched non-NS rats that received a vehicle alone were grouped as control. Urinary protein excretion and serum cholesterol were assayed; image analysis and techniques of pathology, immunohistochemistry, and molecular biology were used to determine morphological changes in glomeruli and the production of glomerular mesangial matrices in different groups. RESULTS: The serum total cholesterol level was significantly higher in rats with high-lipid chow in both non-NS [(2.2 +/- 0.3) g/L vs. (0.9 +/- 0.1) g/L, P 展开更多
关键词 adriamycin induced nephrosis high lipid diet glomerular mesangial matrixObjective. To determine the effect of hypercholesterolemia induced by a high-lipid diet on glomerulosclerosis. Methods. Twenty nephrotic syndrome (NS) Wistar rats admin
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Ochratoxigenic Black Aspergilli Isolated from Dried Agricultural Products in Yogyakarta, Indonesia 被引量:1
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作者 Apriyanto Dwi Nugroho Francis Maria Constance Sigit Setyabudi +1 位作者 Baharuddin Salleh Endang Sutriswati Rahayu 《Journal of Food Science and Engineering》 2013年第9期472-480,共9页
Black aspergilli, the potential ochratoxin A (OTA) producers, were predominant fungi in fermented cocoa bean, coffee bean and dried cassava in Yogyakarta. Identification of black aspergilli at species level will be ... Black aspergilli, the potential ochratoxin A (OTA) producers, were predominant fungi in fermented cocoa bean, coffee bean and dried cassava in Yogyakarta. Identification of black aspergilli at species level will be useful to make clear link between OTA contamination on food product and the toxin producer. The objective of this study was to identify the species of the black aspergilli producing OTA which contaminated dried agriculture products. In this study, 16 isolates were obtained, and four isolates among of them (YAC-9, YAK-6, YAK-12 and YAG-2) were found as OTA producing-strains, with the highest OTA found on Yeast Extract Sucrose (YES) solid medium of 57.68 ppb. Based on morphological characters, 16 isolates can be grouped into four species, after confirmation by molecular data based on PCR method, the groups were identified as A. carbonarius, A. niger, A. tubingensis and A. aculeatus. OTA producing-strains were identified as A. carbonarius and A. niger, meanwhile, A. tubingensis and A. aculeatus were found as non-OTA producing-strains. 展开更多
关键词 Black aspergilli ochratoxin A (OTA) PCR.
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Study on Optimal Fermentation and Storage Time of Soybean Food (Thua-Nao)in Thailand
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作者 Laongdown Sangla Tawadchai Suppadit +1 位作者 Sutad Pintasen Aorawan Wungdeethrum 《Journal of Life Sciences》 2010年第6期46-49,共4页
The soybean cultivar Tadang Muangpai was used to improve the productive quality of Thua-Nao and reduce the concentration of aflatoxin to less than 20 ppb. It was conducted at CMFCRC, Chiangmai, Thailand between Dec. 2... The soybean cultivar Tadang Muangpai was used to improve the productive quality of Thua-Nao and reduce the concentration of aflatoxin to less than 20 ppb. It was conducted at CMFCRC, Chiangmai, Thailand between Dec. 2006 and Mar. 2007. Soybean was boiled for 5 hours and then fermented at different time to create natural bacterial species, mainly Bacillus spp. Thua-Nao could be stored up to 90 days after in storage. Nutritional value, food value, and microorganisms content were investigated during fermentation and storage. Also, aflatoxin content of Thua-Nao was recorded during storage. The results showed that 3 days of soybean fermentation gave the best performance of Thua-Nao in term of nutritional value (protein = 47.12%), food value, and content of Bacillus spp. (2.78 × 10^9 CFU/g). Without being harmed from aflatoxin, Thua-Nao could be stored not more than 23 days in normal room (Tmax. = 33.9 ℃, Tmin. = 15.8 ℃) and not more than 36 days in climate-controlled room (Tmax. = 20 ℃, Tmin. = 15 ℃). 展开更多
关键词 Soybean food Thua-Nao optimal fermentation and storage time nutritional value.
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