Recovery of Xylose from Sago Hampas via Dilute Sulphuric Acid Pretreatment : Effects of Hydrolysis Reaction Time and Temperature

Siti Nur Najihah, Rusnan (2018) Recovery of Xylose from Sago Hampas via Dilute Sulphuric Acid Pretreatment : Effects of Hydrolysis Reaction Time and Temperature. [Final Year Project Report] (Unpublished)

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Abstract

Metroxylan sagu (Sago) produced sago hampas as a by-product after starch extraction and are abundantly found as an industrial waste. On dry basis, sago hampas extraction consist lignocellulosic materials of 58% of starch, 23% of cellulose, 9.3% of hemicellulose which eventually contains glucose and xylose and 4% of lignin, approximately. This study focused on how 2.5% (v/v) of dilute sulphuric acid (H2SO4) pre-treatment with studied parameters of hydrolysis time and temperature affected the xylose concentration produced from sago hampas. Xylose which can be further fermented to produce xylitol which can be used in many commercial applications in different sectors of food and dental related products. Liquefaction and saccharification enzymes, termamyl 0.5μL/g and dextrozyme 0.6iLig are added to help in enzyme hydrolysis process of sago hampas. In this experiment, the result of xylose production showed an increase as the parameters increase but to certain point the xylose production decrease. The best xylose production are produce at 60 minutes of hydrolysis time with 9.14% of xylose recovery and at 120°C of temperature with 9.14% of xylose recovery. From the present of study, it can be concluded that hydrolysis time and temperature plays great role in inducing the xylose production from sago hampas.

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