Seeds of soybeans and mung beans were soaked into five different concentrations (0, 0.05, 0.10, 0.20, 0.30 mg/L) of natural brassinolide ( NBR ) solution. According to the results, natural brassinolide treatment c...Seeds of soybeans and mung beans were soaked into five different concentrations (0, 0.05, 0.10, 0.20, 0.30 mg/L) of natural brassinolide ( NBR ) solution. According to the results, natural brassinolide treatment could improve seed germination rate and hypocotyl-radicle ratio of soybeans and mung beans and promote the growth of sprouts. To be specific, seed germination rate of soybeans reached the highest in 0.05 mg/L natural brassinolide treatment, which was im- proved by 25.0 percentage points compared with the control group, and the sprout length was improved by 4.33 em; 0.30 mg/L natural brassinolide exhibited the most significant promotion effect on seed germination and sprout growth of mung beans, seed germination rate was improved by 18.3 percentage points and sprout length was improved by 7.29 cm; hypocotyl-radiele ratio of soybean and mung bean sprouts reached the highest (2.96, 1.43 ) in 0.05 mg/L natural brassinolide treatment.展开更多
豆芽中植物生长调节剂的滥用是影响其食用安全的主要因素。本文开发了高效液相色谱-串联质谱方法测定豆芽中3-吲哚乙酸、4-氯苯氧乙酸、6-苄基腺嘌呤、赤霉素,质谱检测采用多反应监测模式,采用外标法定量。样品经超声辅助提取后,加入Na...豆芽中植物生长调节剂的滥用是影响其食用安全的主要因素。本文开发了高效液相色谱-串联质谱方法测定豆芽中3-吲哚乙酸、4-氯苯氧乙酸、6-苄基腺嘌呤、赤霉素,质谱检测采用多反应监测模式,采用外标法定量。样品经超声辅助提取后,加入Na Cl盐析,有机相经分散固相萃取净化后,进液相色谱-串联质谱检测。4种植物生长调节剂的检出限为5μg/kg,定量限(limit of quantitation,LOQ)为10μg/kg。以黄豆芽和绿豆芽为基质,分别做LOQ、2LOQ和10LOQ三个水平的添加试验,每个水平6个重复,方法的回收率范围为65.1%~109.8%,相对标准偏差(RSD)范围为1.49%~10.08%。为降低样品测定时假阳性问题,做多反应监测的同时做目标离子的增强子离子扫描。本方法可用于市售的豆芽样品中3-吲哚乙酸、4-氯苯氧乙酸、6-苄基腺嘌呤、赤霉素的监测,为保障消费安全提供技术支撑。展开更多
基金Supported by Key Joint Foundation for Fostering Talents of NSFC-Henan Province(U1204307)Key Project of Science and Technology of Henan Province(102102110155,142102110173,152102210334)Cultivation Fund of Luoyang Normal University(2013-PYJJ-001,10000993)
文摘Seeds of soybeans and mung beans were soaked into five different concentrations (0, 0.05, 0.10, 0.20, 0.30 mg/L) of natural brassinolide ( NBR ) solution. According to the results, natural brassinolide treatment could improve seed germination rate and hypocotyl-radicle ratio of soybeans and mung beans and promote the growth of sprouts. To be specific, seed germination rate of soybeans reached the highest in 0.05 mg/L natural brassinolide treatment, which was im- proved by 25.0 percentage points compared with the control group, and the sprout length was improved by 4.33 em; 0.30 mg/L natural brassinolide exhibited the most significant promotion effect on seed germination and sprout growth of mung beans, seed germination rate was improved by 18.3 percentage points and sprout length was improved by 7.29 cm; hypocotyl-radiele ratio of soybean and mung bean sprouts reached the highest (2.96, 1.43 ) in 0.05 mg/L natural brassinolide treatment.
文摘豆芽中植物生长调节剂的滥用是影响其食用安全的主要因素。本文开发了高效液相色谱-串联质谱方法测定豆芽中3-吲哚乙酸、4-氯苯氧乙酸、6-苄基腺嘌呤、赤霉素,质谱检测采用多反应监测模式,采用外标法定量。样品经超声辅助提取后,加入Na Cl盐析,有机相经分散固相萃取净化后,进液相色谱-串联质谱检测。4种植物生长调节剂的检出限为5μg/kg,定量限(limit of quantitation,LOQ)为10μg/kg。以黄豆芽和绿豆芽为基质,分别做LOQ、2LOQ和10LOQ三个水平的添加试验,每个水平6个重复,方法的回收率范围为65.1%~109.8%,相对标准偏差(RSD)范围为1.49%~10.08%。为降低样品测定时假阳性问题,做多反应监测的同时做目标离子的增强子离子扫描。本方法可用于市售的豆芽样品中3-吲哚乙酸、4-氯苯氧乙酸、6-苄基腺嘌呤、赤霉素的监测,为保障消费安全提供技术支撑。