회전식 점도계를 이용한 상업용 증점제의 점도 분석법 검토

초록

In this study, the viscosity of six food additives used as thickeners (xanthan gum, glucomannan, guar gum, pullulan, locust bean gum, and polyvinyl alcohol) was verified using a Brookfield rotational viscometer. Pullulan was prepared in a 10% aqueous solution, and other samples were prepared in a 1% aqueous solution. The measurements showed that glucomannan had a high viscosity value of >3,000.00 cp, compared to guar gum with >2,500.00 cp and xanthan gum with >1,000.00 cp. Locust bean gum and pullulan had low viscosity values of 110.00 cp and polyvinyl alcohol had low viscosity values of 6.60 cp. All samples were subjected to intra-day and inter-day precision analyses. As a result of cross-validation performed by the institution, similar viscosity values were achieved for each sample. Therefore, this data show that the rotary viscometer can contribute to high precision when measuring viscosity.

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