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REFERENCES:

1. Beutler, H. -O. & Ara, V. (1992). Enzymatic determination of D-malic acid in fruit juices. Fruit Processing, 2, 140-141.

2. Hunger, Ch., Schuch, R. & Hortner, H. Bundesanstalt fur Lebensmitteluntersuchung und-forschung. Wien (1995). Enzymic determination of D-malic acid in wine and fruit juices. In Current Status and Future Trends in Analytical Food Chemistry. Proceedings of the Eighth European Conference on Food Chemistry (Euro. Food Chem. VIII), Vol. 3, 715-718.

3. Elkins, E. R. & Freund, W. (1994). Detection of adulteration in apple juice by L-malic/total malic acid ratio: Collaborative Study. J. AOAC Int., 77, 411-415.

4. Rader, F. & Knichel, W. (1988). D-(+)-Malate. In Methods of Enzymatic Analysis (Bergmeyer, H. U., ed.), 3rd ed., Vol VII, pp. 53-59, VCH Publishers (UK) Ltd., Cambridge, UK.

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