Worapoj Suntornsuk, Jirawat Kankrengwong, Surakit Jirasant, and Prathana Wanprakeaw

pp. 393 - 401

Abstract

Ya Pak King juice is currently popular among Thai consumers. However, some people do not like to
drink it because of its pungent smell and flavor. The objectives of this investigation were to improve consumer perception of ready-to-drink Ya Pak King juice and to produce the concentrated drink by vacuum
microwave drying. The herbal juice from Ya Pak King was prepared and formulated with lemon juice and
honey by the Mixture Design. The drink flavor and taste were then modified by the addition of sugar and
citric acid and the drink was, finally, concentrated by a vacuum microwave oven. The results showed that
the ratio of the herbal juice: honey: lemon juice at 30:55:15 gave the highest acceptance score from panelists.
In addition, the drink modified to achieve 20 ⁰Brix total soluble solid and 0.45% acidity was the most acceptable. After testing the Ya Pak King beverage diluted from the concentrated drink and the drink before concentration, no significant difference in characteristics of the two products was found.