O brix na determinação da riqueza em açúcares do mamão como auxiliar no melhoramento do mamoeiro (Carica papaya L.)

Valsechi, Octavio; Mitidieri, José

doi:10.1590/S0071-12761954000100013

Resumo

There is in the literature a noteworthy lack of sampling methods to be employed in the selection of papaya fruits for genetical improvement purposes. In the present experiment methods applied to melon and watermelon were extended to papaya with good results. The authors tried to correlate the solids content-as determined by a hand refractometer-with total sugars in the fruit. The correlation does exist being significant and positive. A regression equation was worked out; it permits to calculate the total sugar content provided the Brix value determined by the hand refractometer is known. The equation is as follows: a = 0.57 s where a = total amount of sugar as glucose, and s = total solids.

^ILivre Docente da Secção de Tecnologia Agrícola E. S. A. "Luiz de Queiroz"

^IIAssistente da Secção de Genética E. S. A. "Luiz de Queiroz"

SUMMARY

There is in the literature a noteworthy lack of sampling methods to be employed in the selection of papaya fruits for genetical improvement purposes. In the present experiment methods applied to melon and watermelon were extended to papaya with good results. The authors tried to correlate the solids content-as determined by a hand refractometer-with total sugars in the fruit. The correlation does exist being significant and positive. A regression equation was worked out; it permits to calculate the total sugar content provided the Brix value determined by the hand refractometer is known. The equation is as follows:

a = 0.57 s

where

a = total amount of sugar as glucose, and

s = total solids.

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Full text available only in PDF format.

AGRADECIMENTOS

Desejam os autores deixar aqui consignados seus sinceros agradecimentos ao Eng. Agr. Marcilio Dias, pelas sugestões apresentadas nêste trabalho e aos livres-docentes Drs. José T. do Amaral Gurgel e Dr. Frederico Pimentel Gomes, pela orientação dada na análise estatística.

BIBLIOGRAFIA

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