pom212-pomegranates_2005_ak_handout

pom212-pomegranates_2005_ak_handout - Postharvest Biology...

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1 Adel Kader, UCDavis Postharvest Biology and Technology of Pomegranates Postharvest Biology and Technology of Pomegranates Pomegranate cultivars vary in chemical composition and color Intercultivar Variation in Aril Color Intercultivar Variation in Juice Color Pomegranates Are Rich in Antioxidants Red color of juice equal to or darker than Munsell color chart 5R-5/12 Acidity of juice below 1.85% Pomegranate Maturity Indices
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2 Pomegranate Quality Indices • Freedom from growth cracks, sunburn,cuts, bruises, and decay. • Skin color and smoothness. • Aril color intensity and uniformity. • Flavor depends on sugar/acid ratio, which varies among cultivars. A soluble solids content above 17% and total phenolics content below 0.25% are desirable for optimal levels of sweetness and astringency, respectively. Preharvest Defects include Cracking and Sunburn Bruising Surface Abrasions Surface Abrasions Harvesting and Postharvest Handling Defects Alternaria Rot as a Preharvest Defect Infection begins in the orchard especially following rain
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pom212-pomegranates_2005_ak_handout - Postharvest Biology...

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