PEMODELAN DINAMIS PRODUKSI ISOMALTULOSA MENGGUNAKAN BAKTERI ERWINIA RHAPONTICI NX-5 TERIMOBILISASI MENGGUNAKAN PACKED BED REACTOR

• Main Author: Excalimas, Dheyan
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/53008
• Institution: Institut Teknologi Bandung

Isomaltulose is a carbohydrate isomer of sucrose. Isomaltulose and sucrose are disaccharides consisting of glucose and fructose. In sucrose, glucose is connected to the anomeric carbon present in fructose which is applied by ?-1,2 bonds while in isomaltulose, glucose is connected to fructose which is bound by ?-1,6 bonds. Isomaltulose is absorbed by the body more slowly than sucrose. Isomaltulose has a Glycecmic Index (GI) value of 32 while sucrose has a GI value of 100.The low glycemic index value indicates that isomaltulose stays in the blood longer and could provide more stable energy and maintain sugar levels in the body. Apart from these advantages, isomaltulose can also be completely digested by the body and can reduce tooth decay. For this reason, isomaltulose becomes a sweetener to replace sucrose. Research on isomaltulose commonly still limited to laboratory scale. So, this research aims to model the isomaltulose production system using immobilized Erwinia rhapontici NX-5 with a packed bed reactor system to see its effectiveness when applied to an industrial scale. Packed bed reactor system is chosen because of its superiority in terms of efficiency and the amount of product obtained. Modeling is done with the parameter of residence time value in the form of 12 hours and a cell density of 20 gr / l. The modeling results showed a maximum sucrose conversion value of 87% of the sucrose consumed in the reactor outflow. The capability of the reactor can be increased by increasing the cell density in the reactor and by using an immobilization matrix with a high diffusion constant.