PDF(Pubmed)
Abstract：
Kaffir lime juice, often treated as production waste, can be a good source of terpenes. These compounds undergo various decomposition processes under the influence of external factors, especially during transportation and storage. In this paper, it was possible to monitor changes in the terpene profile of kaffir lime juice under different storage conditions, namely, 4 °C, 20 °C, and 35 °C. The identification of key decomposition products was achieved using gas chromatography-mass spectrometry (GC-MS) and a data mining protocol. It was followed by tracing those products in different storage conditions using a high-throughput proton transfer reaction mass spectrometry (PTR-MS) approach. Based on our findings, degradation pathways were presented, showing that the main products resulting from storage are p-cymene, p-cymenene, terpinene-4-ol, and α-terpineol. It was shown that conversion to p-cymenene occurs after 5 days of storage. Terpinene-4-ol and α-terpineol were found to be the final products of the conversion at all temperatures. Changes in the composition of terpenes are important from the point of view of their bioactive properties.
摘要：
Kaffir酸橙汁，通常被视为生产废物，可以是萜烯的良好来源。这些化合物在外部因素的影响下经历各种分解过程，特别是在运输和储存过程中。在本文中,在不同的储存条件下，可以监测卡菲尔柠檬汁的萜烯分布的变化，即,4°C,20°C,35°C使用气相色谱-质谱（GC-MS）和数据挖掘协议实现了关键分解产物的鉴定。然后使用高通量质子转移反应质谱（PTR-MS）方法在不同的储存条件下追踪这些产品。根据我们的发现,提出了降解途径，表明储存产生的主要产品是对丙炔，对-异丙基苯,萜品烯-4-醇，和α-松油醇.已显示在储存5天后发生向对-环烯的转化。发现松油烯-4-醇和α-松油醇是在所有温度下转化的最终产物。从其生物活性的观点来看,萜烯组成的改变是重要的。
