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为明确干旱、盐等环境因素对制干椒辣椒素含量的影响,试验以红龙23号板椒为材料,从现蕾期开始设置不同土壤含水量65%(W1)、45%(W2)和NaCl(S1=120 mmol·L-1)及盐旱复合处理(W1S1、W2S1),利用高效液相色谱法分析转色期果实辣椒素素含量,并送样进行转录组测序。结果表明,W1处理下辣椒素含量较对照增加107.11%,W2处理时辣椒素含量下降73.01%;含盐处理均能提高辣椒素含量,其中W2S1处理的较对照高392%。盐、旱胁迫主要影响苯丙烷生物合成途径,其中HCT、4CL、CAD等基因表达受影响较大;聚类分析表明BCKDHE2、ENRb等基因主要响应干旱胁迫,CCR、GS2主要响应盐胁迫。由上可知,适度干旱和盐胁迫均能提高辣椒素含量;干旱加剧时与盐分的复合效应更显著,对辣椒素积累的促进作用更大。 相似文献
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探究水杨酸（Salicylicacid,SA）和茉莉酸甲酯(Methyl Jasmonate,MeJA)不同浓度处理下‘鬼椒王’果实胎座中辣椒素和二氢辣椒素含量的变化。采用高效液相色谱法（HPLC）,对不同浓度SA和MeJA喷施后的‘鬼椒王’5个生长期的果实胎座辣椒素和二氢辣椒素含量进行测定。结果表明：（1）不同浓度SA和MeJA处理条件下,处理与对照中辣椒素和二氢辣椒素含量呈现出相同的变化趋势,先增加,并在40 d左右（即果实转红期）达到最高,40~50 d含量降低。（2）SA处理中,较低浓度（1.5 mmol/L）的喷施最有利于辣椒素和二氢辣椒素的积累,最大含量分别为98.400 mg/g和5.771 mg/g,而高浓度（2.5、3.5、5.0 mmol/L）的处理显著抑制了辣椒素的积累。(3)MeJA处理下,4个浓度水平的MeJA（1.0、1.5、2.5、3.5 mmol/L）处理均促进辣椒素和二氢辣椒素的积累,其中,在2.5 mmol/L MeJA的处理下,辣椒素和二氢辣椒素达到最大值,分别为116.181 mg/g和7.035 mg/g。本研究为外施SA和 MeJA促进辣椒中辣椒素的含量提供了科学依据。 相似文献
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采用湘研4号(中等辣度)和景尖椒3号(高辣度)两个辣椒品种的青熟果实,以有光和无光两种不同的条件于室温下储存,就储存期辣椒果实中辣椒素含量的变化进行研究。发现有光储存利于果皮中辣椒素含量的增加,无光储存利于胎座中辣椒素含量的增加。 相似文献
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Capsaicins, present in most hot sauces and salsas, are responsible for the “hot” sensation in many spicy foods. At high doses, capsaicins cause significant discomfort upon contact with the sensitive tissues of the mouth and throat of mammals. By applying a capsaicin containing paste to the outside of maple tree sap collection tubing, operators hope to minimize rodent (primarily red squirrel, Tamiasciurus hudsonicus) gnawing damage to the tubing. However, some operators and sap processors have expressed concern regarding the potential migration of capsaicins through the tubing and into the tree sap, leading to contaminated maple syrup. To address these concerns, we filled a variety of new and used sap collection tubing with maple sap, plugged the ends, and coated the tubing with a commercially available capsaicin-based rodent repellent paste. Following storage, the contents of the tubes were carefully removed and subjected to a solid-phase extraction clean-up process. Capsaicins in the sap were then quantified by high performance liquid chromatography/fluorescence detection. Results indicate that polyethylene tubing was more resistant to capsaicins migration than was polyvinyl tubing. While capsaicins were detected in the sap, the predicted levels in syrup would be below the human taste threshold. 相似文献
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本文较详尽地论述了红辣椒的主要化学成分及其开发利用现状 ;指出了目前我国与发达国家在辣椒红色素等的利用方面存在差距 ,并对该方面的发展趋势做了简要的预测 相似文献
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