人们选购食品,除了关心它的营养价值外,还十分注意它的色、香、味。尽管大部分的香味(又称风味)物质没有营养价值,但食品香味的好坏往往决定了该食品能否为人们接受,能否促进食欲,从而对食品营养(即摄食和消化)具有间 People buy food, in addition to its nutritional value, but also pay great attention to its color, smell and taste. Although most of the aroma (aka flavor) substances have no nutritional value, the aroma of the food often determines whether the food is acceptable to the person or not and promotes appetite and thus has the effect on food nutrition (ie, food intake and digestion)