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Assiut University (2012)

Biochemical, Microbiological and Technological Studies on Fruits of Some Date Cultivars in South Valley

Abdel-Karim, Naglaa Abdel-Sabour Ahmed Ahmed.

Titre : Biochemical, Microbiological and Technological Studies on Fruits of Some Date Cultivars in South Valley

Auteur : Abdel-Karim, Naglaa Abdel-Sabour Ahmed Ahmed.

Etablissement de soutenance : Assiut University

Grade : Master of Science (MSc) in Agricultural Science 2012

Résumé partiel
The date palm ( Phoenix. dactylifera L.) is one of the eldest of cultivated tree fruits, with its origin in prehistoric times and records indicating culture as early 3000 B.C. in the Near East and North Africa. Dates are an important crop in the desert regions of the world ; the date palm tree is among the most presented plants in our Holy Book, the Quran as well as Sunnah. Egypt lies in the first largest date producer among Arab countries where it produce about 1.130.000 tones. Although there are many known varieties of dates in Egypt, there is also many of unknown dates (seedling) with low or no marketing prices. In this investigation, a comparative study of physical properties and chemical composition was carried out between four identified date varieties e.g. Amhat, Hayany, Hagazy, Siwi and three of the Unknown date cultivars (seedling fruits) during the three stages of maturity Khalal, Semi-Rutab and Rutab. In addition, study the aqueous extract of seedling date fruits (juice) was used as a raw- material for the production of ethanol by using of both baker’s yeast and the specific yeast strain Saccharomyces. cerevisiae ATCC4126. The effect of some fermentation conditions such as sugar concentration, pH and fermentation temperature on the obtained ethanol concentration was also studied.

Présentation étendue (EULC)

Page publiée le 15 avril 2019