Proteoglycan polysaccharides (Lycium polysaccharides, LPs) are a unique group of content materials. These polysaccharides differ from conventional plant polysaccharides such as starch and inulin. Proteoglycan is a sugar that is bound to protein. In the saccharide, the carbohydrate portion of LP is 90-95% by weight of the whole macromolecule, the rest is the protein ( Potterat2010glb ).
Dried fruit juice contains more than 20% LP ( Yin2008oet ), according to some studies even up to 40% ( Chang2008uah ). The total carbohydrate content of the dried parsley is 68%, so roughly half of the saccharides are bound in this slowly releasing form.