Post-harvest Changes in Fruit and Vegetable Flavonoid Profiles
J.A. Heyes, T.T. Pinkney, T. Pranamornkith and A.J. Mawson
Program and Abstract. Australasian Postharvest Horticulture Conference. Royal Lakeside Novote., Rotorua, New Zealand. 27-30 September 2005. July 5-10, 2005.. Page 19.
2005
บทคัดย่อ
Post-harvest Changes in Fruit and Vegetable Flavonoid Profiles
Fruit and vegetables are a rich source of flavonoid antioxidants. These compounds are continuing to attract strong research interest because of their association with the promotion of good health and protection against certain disease conditions (including ‘metabolic syndrome’. Individual flavonoid antioxidants vary in their bioavailability and bioefficacy, as measured in a range of bioassay. Given this background, we are measuring flavonoid profiles in a range of vegetable and fruit species and monitoring how the profiles change during post-harvest storage. In this paper we present data from highly perishable vegetables (asparagus, broccoli, and watercress) and lime fruit. We have determined the impact of ‘good’ and ‘bad’ post-harvest storage regimes on their phytochemical composition. Sample have been taken before and after simulated air- or sea- freight and shelf life. Effects of post-harvest treatments such as controlled atmosphere storage, hat water dipping and modified-humidity packaging are being monitored in this programme. We are moving beyond monitoring significant changes in individual compounds towards principal components analysis as an approach to non-targeted recognition of patterns of compositional change that can be applied to the detection of health-related synergies between compounds.