Agronomic yield and starch properties of banana cultivars

Abstract The objective of this work was to evaluate the banana cultivars for their agronomic yield and starch characteristics. The experiment was carried out in a randomized complete block design, with a factorial arrangement of two cultivars ('BRS Conquista' and 'BRS Platina') a...

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Veröffentlicht in:Pesquisa agropecuaria brasileira 2021-01, Vol.56
Hauptverfasser: Leonel, Magali, Leonel, Sarita, Santos, Thaís Paes Rodrigues dos, Souza, Jackson Mirellys Azevedo, Martins, Rafaelly Calsavara, Silva, Marcela Sant’Anna Cordeiro da
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Sprache:eng
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Zusammenfassung:Abstract The objective of this work was to evaluate the banana cultivars for their agronomic yield and starch characteristics. The experiment was carried out in a randomized complete block design, with a factorial arrangement of two cultivars ('BRS Conquista' and 'BRS Platina') and two crop cycles, with three plants per treatment, and five replicates. Fruit yield and starch quality were evaluated. 'BRS Conquista' showed smaller fruit; however, it had a greater marketable bunch weight and yield than 'BRS Platina'. Starches differed for the main physicochemical characteristics, except for X-ray diffraction pattern (B type) and phosphorus content (0.0058–0.0060%). 'BRS Platina' stood out for its higher content of resistant starch (74.55%) that differed from the starch isolated from 'BRS Conquista'. However, the starch of 'BRS Conquista' showed the following characteristics: larger granules (34.74 µm), with greater crystallinity (33.64%); less swelling power and solubility (26.77 g g-1 and 19.21%, respectively); and greater breakdown, setback and final viscosity (67.06, 182.42, and 341.39 RVU, respectively). 'BRS Conquista' shows favorable production characteristics for processing to obtain starch. The higher resistant starch content of 'BRS Platina' may commercially justify its lower agronomic yield. Starches of the two cultivars show desirable characteristics for different industrial applications. Resumo O objetivo deste trabalho foi avaliar cultivares de bananeira quanto aos seus rendimentos agronômicos e características de amido. O experimento foi realizado em blocos ao acaso, com arranjo fatorial de duas cultivares ('BRS Conquista' e 'BRS Platina') e dois ciclos da cultura, com três plantas por tratamento e cinco repetições. Avaliaram-se a produção e a qualidade do amido dos frutos. 'BRS Conquista' apresentou frutos menores; no entanto, mostrou maior massa comercial e produtividade do cacho do que 'BRS Platina'. Os amidos diferiram quanto às principais características físico-químicas, exceto quanto ao padrão de difração de raios X (tipo B) e teor de fósforo (0,0058–0,0060%). 'BRS Platina' destacou-se por seu maior teor de amido resistente (74,55%) que diferiu do amido isolado de 'BRS Conquista'. No entanto, o amido de 'BRS Conquista' apresentou as seguintes características: grânulos maiores (34,74 µm), com maior cristalinidade (33,64%); menor poder de inchamento e solubilidade (26,77 g g-1 e 19,21%, respectivamente); e maiores quebra de viscosidade, tendê
ISSN:0100-204X
1678-3921
1678-3921
DOI:10.1590/s1678-3921.pab2021.v56.02491