Toward better understanding of postharvest deterioration: Biochemical changes in stored cassava (Manihot esculenta Crantz) roots

Uarrota Virgilio Gavicho, da Costa Nunes Eudardo, Martins Peruch Luiz Augusto, de Oliveira Neubert Enilto, Coelho Bianca, Moresco Rodolfo, Garcia Domínguez Moralba, Sanchez Teresa, Luna Meléndez Jorge Luis, Dufour Dominique, Ceballos Hernan, Becerra López-Lavalle Luis Agusto, Hershey Clair, Rocha Miguel, Maraschin Marcelo. 2016. Toward better understanding of postharvest deterioration: Biochemical changes in stored cassava (Manihot esculenta Crantz) roots. Food Science and Nutrition, 4 (3) : 409-422.

Résumé : Food losses can occur during production, postharvest, and processing stages in the supply chain. With the onset of worldwide food shortages, interest in reducing postharvest losses in cassava has been increasing. In this research, the main goal was to evaluate biochemical changes and identify the metabolites involved in the deterioration of cassava roots. We found that high levels of ascorbic acid (AsA), polyphenol oxidase (PPO), dry matter, and proteins are correlated with overall lower rates of deterioration. On the other hand, soluble sugars such as glucose and fructose, as well as organic acids, mainly, succinic acid, seem to be upregulated during storage and may play a role in the deterioration of cassava roots. Cultivar Branco (BRA) was most resilient to postharvest physiological deterioration (PPD), while Oriental (ORI) was the most susceptible. Our findings suggest that PPO, AsA, and proteins may play a distinct role in PPD delay.

Mots-clés Agrovoc : manioc, Manihot esculenta, perte après récolte, biodétérioration, acide organique, catéchol oxydase, coumarine, teneur en matière sèche, sucre, teneur en protéines, marqueur génétique, activité enzymatique, variété, propriété physicochimique, composition chimique, aptitude à la conservation

Mots-clés géographiques Agrovoc : Brésil, Santa Catarina

Classification Agris : J11 - Manutention, transport, stockage et conservation des produits d'origine végétale
Q04 - Composition des produits alimentaires
Q02 - Traitement et conservation des produits alimentaires

Champ stratégique Cirad : Axe 3 (2014-2018) - Alimentation durable

Auteurs et affiliations

• Uarrota Virgilio Gavicho, UFSC (BRA)
• da Costa Nunes Eudardo, Santa Catarina State Agricultural Research and Rural Extension Agency (BRA)
• Martins Peruch Luiz Augusto, Santa Catarina State Agricultural Research and Rural Extension Agency (BRA)
• de Oliveira Neubert Enilto, Santa Catarina State Agricultural Research and Rural Extension Agency (BRA)
• Coelho Bianca, UFSC (BRA)
• Moresco Rodolfo, UFSC (BRA)
• Garcia Domínguez Moralba, CIAT (COL)
• Sanchez Teresa, CIAT (COL)
• Luna Meléndez Jorge Luis, CIAT (COL)
• Dufour Dominique, CIRAD-PERSYST-UMR Qualisud (COL) ORCID: 0000-0002-7794-8671
• Ceballos Hernan, CIAT (COL)
• Becerra López-Lavalle Luis Agusto, CIAT (COL)
• Hershey Clair, CIAT (COL)
• Rocha Miguel, Universidade do Minho (PRT)
• Maraschin Marcelo, UFSC (BRA)

Source : Cirad-Agritrop (https://agritrop.cirad.fr/577918/)

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