technological quality and utilization of potato tubers qualidade tecnológica e utilização de tubérculos de batata

technological quality and utilization of potato tubers qualidade tecnológica e utilização de tubérculos de batata

;José Carlos Feltran;Leandro Borges Lemos;Rogério Lopes Vieites
journal of the iranian chemical society 2004 Vol. 61 pp. 593-597
137
feltran2004scientiatechnological

Abstract

Increasing concerns have been verified with regard to the quality factor of potato tubers and their correct form of use and consumption. The purpose of this research was to determine the technological quality of potato tuber cultivars and identify the best forms of use and consumption. A completely randomized experimental design was adopted with 18 treatments represented by cultivars Agata, Apuã (IAC-5977), Aracy (IAC-2), IAC Aracy Ruiva, Asterix, Bintje, Dali, Clone IAC-6090, Itararé (IAC-5986), Laguna, Remarka, Liseta, Mondial, Novita, Oscar, Picasso, Santana, and Solide, with four replications. Specific gravity showed a positive correlation with starch content, texture, pulp pH, and soluble solids, and was negatively correlated with reducing sugars. The technological characteristics represented by specific gravity, dry matter content, texture, starch content, reducing sugars, pulp pH, titrable acidity, and soluble solids are influenced by genotype or cultivar. Cultivars Oscar, Itararé, IAC Aracy Ruiva, Clone IAC-6090, Aracy, Solide, Asterix, Santana, and Laguna were outstanding with best characteristics for frying, mashing and roasting. Mondial, Picasso, Novita, Dali, and Agata are appropriate for boiling, and more specifically for salads. In turn, potato cultivars Apuã, Remarka, Bintje, and Liseta are suitable for mashing and for roasting.
Atualmente tem ocorrido crescente preocupação com o fator qualidade da batata e a forma correta de utilização para o consumo. O objetivo deste trabalho foi determinar a qualidade tecnológica dos tubérculos de cultivares de batata, visando identificar a melhor forma de utilização e consumo. O delineamento experimental foi inteiramente casualizado com 18 tratamentos, representados pelos cultivares Agata, Apuã (IAC-5977), Aracy (IAC-2), IAC Aracy Ruiva, Asterix, Bintje, Dali, Clone IAC-6090, Itararé (IAC-5986), Laguna, Remarka, Liseta, Mondial, Novita, Oscar, Picasso, Santana e Solide, com quatro repetições. O peso específico apresentou correlação positiva com o teor de amido, textura, pH de polpa e sólidos solúveis e negativa com os teores de açúcares redutores. As características tecnológicas representadas pelo peso específico, teor de matéria seca, textura, teor de amido, açúcares redutores, pH da polpa, acidez titulável e teor de sólidos solúveis são influenciadas pelo genótipo ou cultivar. Destacaram-se, com melhores características para fritura, purê e assada os cultivares Oscar, Itararé, IAC Aracy Ruiva, Clone IAC-6090, Aracy, Solide, Asterix, Santana e Laguna. São apropriados para o cozimento e especificamente para salada os cultivares Mondial, Picasso, Novita, Dali e Agata. Já os cultivares Apuã, Remarka, Bintje e Liseta são adequados para purê e assadas.

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