METHODS FOR PRODUCING WATER SOLUBLE OIL PALM LEAF POWDER AND CONCENTRATE
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United States of America Patent
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Sep 29, 2016
app pub date -
Sep 16, 2015
filing date -
Mar 24, 2015
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Abstract
The present invention relates to methods for producing water soluble oil palm leaf powder and concentrate. The most preferred method includes the steps of (a) cleaning the leaves with water or an acid with pH lower than 5.5 and salts to produce an extract, (b) extracting the oil palm leaves with a solvent which has polarity index above 2.5 such as methanol, ethanol or ethyl acetate or any combination thereof, especially catechins or ethanol and water which are generally recognized as safe (GRAS) for food consumption (c) filtering and/or centrifuging the extract, (d) sterilizing the extract and (e) microencapsulating the extract from step (d) to form the water soluble oil palm leaf powder and concentrate.
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