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This study aimed to characterize the quality and bioactive compounds from five cultivars grown in Mexico´s northern region: Heritage, Summit, Harvest, and red and yellow Autumn. The physicochemical characteristics, DPPH anti-radical capacity, total phenolics, flavonoid and anthocyanins, polyphenolic profile, and ascorbic acid levels of the raspberries were assessed. The Harvest cultivar presented the highest weight and firmness and the lowest yield, total phenolics, and flavonoids. The yellow Autumn Bliss contained higher concentrations of polyphenols and ascorbic acid, and the red Autumn Bliss contained higher concentrations of flavonoids and anthocyanins and possessed a greater antioxidant capacity. The polyphenol profile indicated the presence of seven phenolic acids, namely, ellagic, gallic, caffeic, chlorogenic, p-coumaric, hydroxybenzoic, and protocatechuic acids; and four flavonoids, namely, catechin, quercetin-3-β-D-glucoside, quercetin-3-glucuronide, and rutin; these compounds were present in all the varieties, except for rutin, in yellow Autumn Bliss. The results of this study highlight the most valuable raspberry cultivars in terms of weight and firmness (Harvest), yield (Heritage), polyphenols and ascorbic acid (yellow Autumn Bliss), and anthocyanins and antioxidant capacity (red Autumn Bliss) in raspberries grown in northern Mexico. [ABSTRACT FROM AUTHOR]

Three strains of Candida oleophila and their combination were evaluated for nutrient competition as a mode of action for the biocontrol of Penicillium expansum and Botrytis cinerea. C. oleophila treatments reduced germination of conidia of both pathogens when challenged on 1% 'Golden Delicious' apple juice. P. expansum conidia germination was 1x107 mL-1 and B. cinerea conidia germination was 5x103 mL-1 . C. oleophila treatments lowered conidia germination from 2-7x104 mL-1 for P. expansum and from 1-4x104 for B. cinerea. C. oleophila treatments reduced conidia germination on an average of 99% for P. expansum and 96% for B. cinerea. Sugar consumption for L07 rugose was of 0.026 mg mL against B. cinerea and of 0.056 mg mL against P. expansum. Sugar consumption supports conidia germination reduction. P. expansum consumed 1.69 μg L-1 of proteins, while L07 rugose consumed the greatest amount with 47.95 μg L-1. B. cinerea consumed 8.95 μg L-1 and L06 consumed 36.89 μg L-1, which was statistically equal to that of L07 rugose with 27.96 μg L-1. C. oleophila strains biocontrol B. cinerea and P. expansum, in part, by nutrient competition. [ABSTRACT FROM AUTHOR]