Quantitative analysis of lactose and lactulose in urine by high performance liquid chromatography for determination of intestinal lactase activity

Nani Dharmasetiawani; Herman Suryadi; Agus Firmansyah

doi:10.13181/mji.v12i1.84

Quantitative analysis of lactose and lactulose in urine by high performance liquid chromatography for determination of intestinal lactase activity

Authors

Nani Dharmasetiawani
Herman Suryadi
Agus Firmansyah

DOI:

https://doi.org/10.13181/mji.v12i1.84

Keywords:

Lactase activity, Lactulose, Lactose, High Performance Liquid Chromatography

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Abstract

Determination of intestinal lactase activity is directly done by measuring its activity in intestinal epithelium. This is an invasive method and ethically can not be done in healthy infants. Indirectly, determination of lactase activity, stated as excretion and ingestion ratio of lactose and lactulose, needs 30 hours hospitalized infants. The aim of this study was to look for a method for determination of lactase activity which is not invasive and not necessary hospitalized. Using this method lactose and lactulose were given as a single oral load after 2 hours fasting. Urine were collected for 5 hours starting from consuming sugar solution and then lactose and lactulose concentration in the urine were measured by High Performance Liquid Chromatography. The results showed single oral load of lactose and lactulose can be used for determination of lactase activity in infant and the infants were observed only for 7 hours. (Med J Indones 2003; 12: 8-12)

Keywords: Lactase activity, Lactulose, Lactose, High Performance Liquid Chromatography

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Author Biographies

Nani Dharmasetiawani

Department of Child Health, Budi Kemuliaan Maternity
Hospital, Jakarta, Indonesia

Herman Suryadi

Department of Pharmacy, Faculty of Natural Science,
University of Indonesia, Jakarta, Indonesia

Agus Firmansyah

Department of Child Health, Medical Faculty, University of
Indonesia, Jakarta, Indonesia

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Published

2003-02-01

How to Cite

Dharmasetiawani N, Suryadi H, Firmansyah A. Quantitative analysis of lactose and lactulose in urine by high performance liquid chromatography for determination of intestinal lactase activity. Med J Indones [Internet]. 2003Feb.1 [cited 2024Dec.22];12(1):8-12. Available from: http://mji.ui.ac.id/journal/index.php/mji/article/view/84

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Issue

Vol. 12 No. 1 (2003): January-March

Section

Basic Medical Research

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