Effects of phenological stages on yield and composition of essential oil of Syzygium aromaticum buds from Madagascar

Abstract

Variation on yield and composition of the essential oil of Syzygium aromaticum buds from Madagascar at different phenological stages including young bud stage, budding stage 1, budding stage 2, budding stage 3, full budding stage, flowering stage, initial fruiting stage, full fruiting stage are reported. The essential oil yield varied from 2.52% to 17.94%, reaching a maximum at the end of budding stage, after which it rapidly decreased. The essential oil was analyzed by GC and four constituents were identified and quantified for whole phenological stages. Eugenol and eugenyl acetate were the main compounds in all samples. Eugenol, was lower in the young bud stage (39.66%) and increased in the subsequent phenological stages to reach maximum in the full fruiting stage (94.89%). In contrast, eugenyl acetate was higher in the young bud stage (56.07%), after which decreased to reach minimum in the full fruiting stage (2.01%).

Role of Clove in Human Medical History

“…The Zanzibar variety produces more buds than other varieties and considered the most superior and cultivated variety (Rukmana and Yudirachman, 2016). A clove bud is a single flower with a length of 1-2 cm, while a clove flower has eight stages of clove bud development, namely young bud, budding-1, budding-2, budding-3, full-budding, flowering, initial fruiting, and full fruiting (Rukmana andYudirachman, 2016 andRazafimamonjison et al, 2013). Eugenol is the main component of clove oil, which has strong antioxidant activity (Laitupa and Susane, 2010).…”

Biological Activity of <i>Syzygium aromaticum</i> and <i>Ravensara aromatica</i> Essential Oils from Madagascar and Their Possible Use against Postharvest Mango Anthracnose

“…This study is therefore based on the hypothesis that native Malagasy Eo also has antifungal abilities that can be used to prevent anthracnose development on stored mangoes from Reunion Island. The high variability and volatility of Ravensara Eo [31], on which its anti-germinative intensity depends [25], and the microvariability and high density of clove Eo [32] are important characteristics on which investigations were focused. Experiments were then conducted on the biological activities of these Eos against Colletotrichum and their effect on mango fruit anthracnose development and resorcinol production in view of their eventual use as a potential mango preservative during postharvest storage.…”