Post-harvest Preservation of Cactus Fruits Produced in Semidesertic Areas of Oaxaca byBiopolymer Coatings

By Carmen Guadalupe Hernandez, Keiko Shirai, Paloma Mejía, Stephany Blanco, Angélica Román, Lourdes Yáñez and Héctor Escalona.

Published by The International Journal of Interdisciplinary Social Sciences: Annual Review

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The pitaya (Stenocereus pruinosus) and sweet xoconostle (Stenocereus stellatus) are Cactaceae fruits with local distribution, due to their perishability and microbial decay with postharvest life from 3 to 5 days. Thus, the objective of this research was to apply chitosan based coatings: commercial chitosan (CQ), chitosan produced by biological-chemical method (Q) and Q grafted to hydroxypropylmethylcellulose in an emulsion with entrapment neem oil (N) (NMQ-g-H). Application in field was carried out in Santa Gertrudis Cosoltepec, in the Mixteca area of Oaxaca, which is a deforested region with eroded soil. QC, Q and NMQ-g-H at 10±5°C and 75±5% relative humidity extended the postharvest life of fruits by 15 days. Q was obtained by thermochemical heterogeneous deacetylation from chitin extracted from a lactic fermentation of shrimp wastes, therefore there is an additional benefit, due to the decrease of wastes produced in coastal area by obtaining value-added products that served as coatings for prolong postharvest life of fruits produced in Mixteca Region of Oaxaca.

Keywords: Pitaya, Sweet Xoconostle, Coatings, Deforest, Erosion

The International Journal of Interdisciplinary Social Sciences: Annual Review, Volume 11, pp.15-26. Article: Print (Spiral Bound). Article: Electronic (PDF File; 1.536MB).

Carmen Guadalupe Hernandez

Postgraduate PhD Student, Faculty of Biological Sciences and Health, Department of Biotechnology, Laboratory of Biopolymers and Pilot Plant, Universidad Autónoma Metropolitana, Mexico City, Federal District, Mexico

Dr. Keiko Shirai

Titular Professor, Faculty of Biological Sciences and Health , Department of Biotechnology, Laboratory of Biopolymers and Pilot Plant, Universidad Autónoma Metropolitana, Mexico City, Federal District, Mexico

Paloma Mejía

Undergraduate Student, Department of Biotechnology, Laboratory of Biopolymers, Universidad Autónoma Metropolitana, México, Federal District, Mexico

Stephany Blanco

Undergraduate Student, Department of Biotechnology, Laboratory of Biopolymers, Universidad Autónoma Metropolitana, Mexico, Federal District, Mexico

Angélica Román

Researcher-Professor, Department of Biotechnology, Universidad Autónoma Metropolitana, Mexico, Federal District, Mexico

Lourdes Yáñez

Researcher-Professor, Department of Biotechnology, Universidad Autónoma Metropolitana, Mexico, Federal District, Mexico

Héctor Escalona

Researcher-Professor, Department of Biotechnology, Universidad Autónoma Metropolitana, Mexico, Federal District, Mexico