Subsequently, the mycelium was washed twice with SDW and finally fumigated with a concentration of 107.5 μM (E)-2-hexenal for 6 h. For the control, an equal volume of SDW was used instead of (E)-2-hexenal. The samples were collected by centrifuging at 3000 g for 5 min ...
2.野杏 种仁含苦杏仁甙约4.84%,还含挥发油,其中主要成分有:下已醛(n-hexanal)占4.81%,反式-2-已烯醛(2-hexenal)占11.57%下已醇(n-hexanol)占14.38%,反式-2-已烯-1-醇(2-hexen-1-ol)占8.28%,芳樟醇占12.61%,a-松油醇占5.69%。牻牛儿醇(geraniol)占2.78%和十四烷酸(teradecanoic acid)占3.6%。
Measurable EAG responses were elicited to all compounds tested, but the most effective antennal stimulants were benzyl acetate, linalool, methyl salicylate and trans-2-hexenal. Mean, pooled EAGs to oxygenated terpenoids, aromatic esters and fatty acid derivatives were larger in magnitude than those ...
醛、酮分子中的羰基碳以双键与氧结合，其成键情况与乙烯有些相似。碳原子是sp 2 杂化，三个sp 2 杂化轨道处于一个平面内，其中一个杂化轨道与氧形成σ键。碳原子上的p 轨道与氧的p 轨道彼此重叠形成π键，并与三个σ键所构成的平面垂直，因此，羰基的碳氧双键是由一个σ键和一个π键组成的，如图9-1（a...
(2)黄酮化合物:芸香甙、桑甙(moracetin,quercetin-3-triglucoside)、异槲皮甙。 (3)香豆素:伞形花内酯(umbelliferone)、东莨菪素(scopoletin)、东莨菪甙(scopolin)。(4)挥发油:约0.0035%,其中有α-及β-乙烯醛(α-,β-hexenal)、顺式-β,γ-己烯醇、苄醇、异戊醇、芳樟醇、丁胺、丙酮、苯甲醛、丁香酚...