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of starch in the food. The saliva also contains mucus, which lubricates the food; the electrolyte hydrogencarbonate , which provides the ideal conditions of pH for amylase to work; and other electrolytes (, , ). About 30% of starch is hydrolyzed into disaccharide in the oral cavity (mouth). After undergoing mastication and starch digestion, the food will be in the form of

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