Abstract

VARGAS-MADRIZ, Haidel et al. Physicochemical quality parameters in guava fruit with presence of larvae of Conotrachelus dimidiatus (Champion) (Coleoptera: Curculionidae). Rev. Chapingo Ser.Hortic [online]. 2019, vol.25, n.2, pp.103-112. ISSN 2007-4034.  https://doi.org/10.5154/r.rchsh.2018.10.019.

This research aimed to evaluate some physicochemical quality parameters in guava fruit with presence of Conotrachelus dimidiatus (Champion) in larval stage. A completely randomized experimental design with 15 and 24 replicates was established. The weight, firmness, diameter, length, color, total soluble solids, titratable acidity and vitamin C in fruit of guava variety Media China were determined. The presence of C. dimidiatus larvae significantly decreased fruit weight, length and equatorial diameter, presenting values of 20.73 g, 37.96 mm and 31.36 mm, respectively. Vitamin C content decreased from 11.71 to 2.80 mg∙100 g-1. The growth and development of C. dimidiatus inside the fruit makes it necessary to implement efficient control methods that allow the harvesting of innocuous fruit for consumption.

Keywords : Psidium guajava L.; guava weevil; post-harvest handling; total soluble solids; ascorbic acid.

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