Examines new analytical techniques to determine authenticity of "natural" fruit flavors, aromas, and essential oils. Describes the biochemical pathways as well as bioconversion of fruit flavors. Reviews the conversion of flavorless precursors to intensely flavored key aroma components in tomatoes, apricots, and apples and describes the effect of packaging and storage on flavor of orange juice, apples, pears, and berries. Describes analytical and sensory characteristics of orange juice, cupuac, carambola, and kiwi fruit flavors and correlates analytical and sensory techniques. Explores the effect that environmental factors, maturity, and variety can have on the quality of fruit products.