Example: tourism industry
OILS AND FATS
Since acid value is an indication of the extent of hydrolysis and deterioration, oils with low acid value are sought after. ALKALI REFINING: The traded quality of oils and fats is determined primarily by the level of free fatty acids present. In crude oils, this may be as low as 0.5% as in soya, or as high as 6.0% as in the case of palm oil.
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