الفهرس 
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Abstract
Sugar beet (Beta vulgaris L.) one of the most important sugar crops in the world, not only for sugar production but also the secondary production, fodder and organic matter for the soil. It represented about 30% of the world production of sugar. In Egypt beet sugar is considered the second crop for sugar production and about 50.8%from local production come from sugar beet on 2014 working season and about 56.86%on working season 2015 in Egypt.
The experiment was carried out at delta sugar company during 2014 and 2015 working season. The samples were optioned from processing at delta sugar company. The investigation was carried out to study Improvement of beet juice extraction and its relationship with preparation stages of beet roots and extraction conditions.
The results could be concluded as follows:
1- Sugar beet analysis in beet receiving station (beet laboratory) under Egyptian condition working season2014 and2015.
18.89 and 18.2% polarity of sugar beet, 0.08 and 0.07 reducing sugar, 2.30 and 2.70 m moll/100g beet sodium,6.04 and 5.81 m moll/100g beet potassium, 3.13 and 3.24 m moll/100g beet α amino nitrogen,0.015 and 0.014 m moll/100g beet natural alkalinity, 0.011 and 0.079 m moll/100g beet effective alkalinity, 4.39 and 5.93% impurity value (tare), 81.98 and 80.51% quality of sugar beets, 2.48 and 3.51% sugar loss in molasses, 15.44 and 14.7% sugar recovery
2- Chemical composition of sugar beet roots during Processing working seasons of 2014 and 2015.
76.5 and 76.92% moisture, 21.36 and 19.19% brix (T.S.S), 18.4 and 17.37% sucrose, 0.11 and 0.26% reducing sugars,0.75 and 0.80% Ash, 4.5 and 4.46% beet marc.
3- Technological characteristics of fresh sugar beet roots during working seasons of 2014 and 2015.
14.08 and 15.28% sugar recovery, 3.89 and 2.22% sugar loss in wastes, 86.87