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Physico-chemical properties and amino acid profiles of sap from Tunisian date palm
Makhlouf-Gafsi, Ines; Mokni-Ghribi, Abir; Bchir, Brahim; Attia, Hamadi; Blecker, Christophe; Besbes, Souhail.
Afiliação
  • Makhlouf-Gafsi, Ines; University of Sfax. National School of Engineers of Sfax. Dept of Biology. Sfax. TN
  • Mokni-Ghribi, Abir; University of Sfax. National School of Engineers of Sfax. Dept of Biology. Sfax. TN
  • Bchir, Brahim; University of Liège. Gembloux Agro-Biotech. Lab. of Food Technology. Gembloux. BE
  • Attia, Hamadi; University of Sfax. National School of Engineers of Sfax. Dept of Biology. Sfax. TN
  • Blecker, Christophe; University of Liège. Gembloux Agro-Biotech. Lab. of Food Technology. Gembloux. BE
  • Besbes, Souhail; University of Sfax. National School of Engineers of Sfax. Dept of Biology. Sfax. TN
Sci. agric ; 73(1): 85-90, Jan.-Feb.2016. tab, ilus
Article em En | VETINDEX | ID: biblio-1497532
Biblioteca responsável: BR68.1
Localização: BR68.1
ABSTRACT
Date palm sap (Phoenix dactylifera L.), also known as legmi, is a fresh juice extracted from date palm trees. The present study aimed to elucidate the effects of collection time (at the beginning of the tapping period and after seven days of collection) on the amino acid profile and physico-chemical properties of date palm sap from both male and female trees. Dry matter, protein, amino acid, and sugar profiles were determined using the Kjeldahl method, High-Performance Liquid Chromatography (HPLC), and High-Performance Anion-Exchange Chromatography with Pulsed Amperometric Detection (HPAEC-PAD), respectively. Date palm sap from both male and female trees contained high levels of carbohydrates. HPLC analysis showed that this fraction was dominated by sucrose in the sap sample from female trees compared to that from male trees. Male date palm sap was noted to exhibit lower dry matter content than female date palm sap but higher protein, total polyphenol, ash, and amino acid contents. While the major essential amino acids in the sap from male trees consisted of valine and threonine, they were represented by lysine and phenylalanine in sap samples from female trees. Further, Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) analysis showed the presence of a proteinic band of 30 kDa only for the sap from male trees. Taken together, the sap from both male and female date palm trees had a number of properties that are highly valued by the functional food industry.
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Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Sci. Agric. / Sci. agric Ano de publicação: 2016 Tipo de documento: Article

Texto completo: 1 Base de dados: VETINDEX Idioma: En Revista: Sci. Agric. / Sci. agric Ano de publicação: 2016 Tipo de documento: Article