Aroma content of fresh basil (Ocimum basilicum L.) leaves is affected by light reflected from colored mulches
Aroma content of fresh basil (Ocimum basilicum L.) leaves is affected by light reflected from colored mulches
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DOI：
10.1021/jf021076c
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发表时间：
2003-04-09
影响因子：
6.1
通讯作者：
Kasperbauer, MJ
中科院分区：
文献类型：
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作者：
Loughrin, JH;Kasperbauer, MJ
甜罗勒（Ocimum basilicum L.）是一种用于为食物添加独特香气和风味的草药。挥发性化合物排放的完全扩展的新鲜叶片生长在滴灌地块，覆盖有六种颜色的覆盖物进行了比较。这些颜色反映了从土壤表面到发育中的叶子的一系列光合光子通量，远红光，红光和蓝光。我们的目的是确定是否从不同的颜色反射可以影响挥发性化合物的浓度从新鲜的叶子。通过顶空取样分离挥发性化合物，并通过气相色谱法进行定量。共鉴定出26个化合物，其中萜类化合物芳樟醇和1，8-桉叶素占总收率的50%以上。挥发性化合物的浓度从叶子上开发超过绿色，蓝色，黄色，白色，红色覆盖物遵循相同的模式，因为他们没有为同一品种的空气干燥的叶子。然而，新鲜叶片中挥发性化合物的浓度比先前研究中发现的风干叶片高约50倍。
Sweet basil (Ocimum basilicum L.) is an herb that is used to add a distinct aroma and flavor to food. Volatile compounds emitted from fully expanded fresh leaves grown in drip-irrigated plots that were covered with six colors of mulch were compared. The colors reflected a range of photosynthetic photon flux, far-red, red, and blue light from the soil surface to developing leaves. Our objective was to determine whether reflection from the different colors could influence concentrations of volatile compounds emitted from the fresh leaves. Volatile compounds were isolated by headspace sampling and quantified by gas chromatography. Twenty-six compounds were identified, of which the terpenoids linalool and 1,8-cineole comprised more than 50% of the total yield. Concentrations of volatile compounds from leaves that developed over green, blue, yellow, white, and red mulches followed the same patterns as they did for air-dried leaves of the same cultivar. However, the concentration of volatile compounds from fresh leaves was about 50-fold higher than those found in the previous study of air-dried leaves.