Nordby H E, McDonald R E
Horticultural Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, 2120 Camden Road, 32803, Orlando, Florida.
Lipids. 1990 Dec;25(12):807-10. doi: 10.1007/BF02535901.
The influence of temperature conditioning on stored grapefruit against chilling injury (CI) as related to the fruit's neutral lipids in the peel was investigated. Squalene, a highly unsaturated C30 isoprene hydrocarbon, was found to be present in the epicuticular wax of grapefruit. The optimal temperature for biosynthesis of squalene in grapefruit was 15°C; this is also the temperature reported previously as the optimum temperature for conditioning grapefruit against chilling injury. Control and temperature-conditioned grapefruit were stored monthly over three seasons from 1986 to 1989. Fruits were rated for chilling injury and the levels of squalene were determined. An inverse relationship found between CI and squalene level suggested that squalene may protect grapefruit from CI.
研究了温度调节对贮藏柚子抗冷害（CI）的影响，以及与果皮中果实中性脂质的关系。角鲨烯是一种高度不饱和的C30异戊二烯烃，被发现存在于柚子的表皮蜡质中。柚子中角鲨烯生物合成的最佳温度为15°C；这也是先前报道的调节柚子抗冷害的最佳温度。1986年至1989年的三个季节里，每月对对照和经温度调节的柚子进行贮藏。对果实的冷害进行评级，并测定角鲨烯的含量。冷害与角鲨烯含量之间的负相关关系表明，角鲨烯可能保护柚子免受冷害。
