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Tentative zinc biofortification of banana fruit via bunch spray and bunch stalk feeding
Author(s) -
Assis Mateus Wagner Dantas,
Leite Gustavo Walace Pacheco,
Cunha Júnior Luis Carlos,
Prado Renato de Mello,
Amorim Edson Perito,
Santos Neto João Paixão,
Carvalho Lívia Cirino,
Teixeira Gustavo Henrique de Almeida
Publication year - 2020
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/ijfs.14547
Subject(s) - stalk , biofortification , zinc , ascorbic acid , cultivar , horticulture , chemistry , biology , agronomy , food science , organic chemistry
Summary Due to the importance of banana consumption in developing countries and producing zinc‐rich foods, the objective of this study was to evaluate the feasibility of banana bunch sprays and bunch stalk feeding with Zn aiming to biofortify this fruit. Zn sprays were carried out with a dose of 80 g ha −1 using ZnCl 2 and ZnCl 2 combined with a chelating agent in two banana cultivars (‘Maravilha’ and ‘FHIA 18’). Bunch stalk feeding with Zn was carried out by fixing plastic bags on the stem end containing solutions of ZnSO 4 (0, 0.5, 1.0 and 2.0 g L −1 ) in two banana cultivars (‘Williams’ and ‘Prata Anã’). Both strategies resulted in a maximum fruit Zn content of 0.14 mg 100 g −1 . Although it was possible to increase the Zn content in banana fruit from ‘FHIA 18’ and ‘Prata Anã’ cultivars, both strategies did not result in biofortified banana fruit with a Zn level which would fulfil the Zn dietary reference intake (DRI) of 2 mg dia −1 for children. Banana bunch sprays with Zn did not affect the fruit quality, but bunch stalk feeding with Zn resulted in fruits with lower ratio, pH and ascorbic acid content.