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Register a new userInfluence of Ultrasonic on The Sorbitol Synthesis from Glucose by Using Lithiumalanat
تأثير الفوصوت في اصطناع السوربيتول من الغلوكوز باستخدام ليثوهيدرات الألمنيوم
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Damascus University ورقة بحثية
Publication date
2001
fields
Chemistry
and research's language is
العربية
Authors
لمياء معمولي( باحث )
Created by
Shamra Editor
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تستخدم المواد المحّلية كبدائل للسكاكر، فهي تمتص بشكل بطيء، و لا تستقلب في جسم الإنسان بشكل تام، و تمنح كمية قليلة من السعرات الحريرات . يقدم هذا البحث دراسة عن تأثير الأمواج فوق الصوتية في تفاعل اصطناع مادة السوربيتول المحّلية، حيث تمت هدرجة الغلوكوز باستخدام مركب ليثوهيدرات الألمنيوم كمادة مهدرجة، و قد جرت مقارنة هذا التأثير مع استخدام التحريك الميكانيكي أو الإبانة، فلاحظنا أن استخدام الأمواج فوق الصوتية أدى إلى الحصول على نتائج متقاربة في كمية السوربيتول الناتجة عن الهدرجة، مهما كانت شروط التفاعل، و لكن تميز بأنه أدى إلى تجمع دقائق هيدروكسيد الألمنيوم الغروية الناتجة عن التفاعل و تكتلها مما ساعد على إمكان فصلها بالترشيح للحصول على محلول للسوربيتول ذي نقاوة عالية، و هذا التميز الناتج عن استخدام الفوصوت قد يفتح أفاقًا جديدة في علم البلورة في المحاليل.
Sweeteners are used as alternatives of Sugar because of their slow absorption and incomplete metabolism in human body, which are positively destinies in setting free small amount of calorie. This research presents the influence of ultrasonic on the sorbitol synthesis, starting from Glucose by implementing hydrogenation using Lithium Aluminum Hydride. The result we have reached by using the ultrasonic as compared with mechanical mixing or other method have lead us to two conclusions: The first was that we have obtained almost the same quantity of the sorbitol. The second was that by using ultrasonic, micelles of colloid Aluminum hydroxide were accumulated. This accumulation resulted in an easy separation by purification, which eventually lead to a super pure sorbitol solution. We hope that these results will be useful for the Crystallography science.
References used
د. معمولي. دراسة تأثير الأمواج فوق الصوتية في تفاعل هدرجة الغلوكوز، مجلة جامعة دمشق للعلوم الأساسية، المجلد ( ١٦ )، العدد الثاني ( ٢٠٠٠ )
ك.س. سسليك، مجلة العلوم، مجلد ٦ العدد ٩ سبتمبر ١٩٨٩
د. هيفاء العظمة. الكيمياء الحيوية، مطبوعات جامعة دمشق ١٩٩١.
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