3.2. Pomegranate juices obtained from clarification with pectolitic
enzymes
The turbidity of a juice is caused mainly by the presence of
pectins and polyphenols. The methods mainly utilized to clarify
juices are therefore depectinization with pectinase and the polyphenols
precipitation by using flocculating agents such as polyvinylpolypyrrolidone,
gelatine and bentonite. Various methods of
clarification were applied to pomegranate juice, mainly based on
polyphenols precipitation (Alper, Bahceci, & Acar, 2005; Vardin &
Fenercioglu, 2003). However, clarification by means of the polyphenols
precipitation leads to a detriment of the nutritional
properties of pomegranate juice, which, as previously stated, is
mainly related to the polyphenols content. So we aimed to obtain
an acceptable clarification (cloudiness level not recognized as a