Color and aroma change research of Rosa damascena in different preservation conditions

With a short florescence period, the oil bearing Rosa damascena often bloom once a year, which limits the rose oil processing. Aiming at tackling the problem, this paper took Rosa damascena as materials and used the thermaldesorption cold trap gas chromatography / mass spectrometer technique ( TCT / GC- MS) to study the changes of rose petal color, aroma type and content under different temperatures and length. The results showed that:petal color could be stored at-80℃ after petal color as just picking 70 d, relative less of aroma components lost from petals after 70 days of storage under-20℃. Through this research, the best preservation conditions of Rosa damascena petals were found.