The present invention relates to new benzene polycarboxylic acids compound, which is prepared by alkaline oxidation of hydrolyzed lignin. The present invention also relates to the use of the new benzene polycarboxylic acids compound as part of a composite substance, where the composite substance is prepared by complexing or encapsulating the new benzene polycarboxylic acid compounds with a metal cation. The present invention also relates to a method for preparing the new benzene polycarboxylic acids compound and for its use in cosmetic, nutraceutical and pharmaceutical compositions.本發明係關於新苯聚羧酸化合物，其係藉由水解木質素之鹼性氧化作用來製備。本發明亦係關於新苯聚羧酸化合物作為複合物質之一部分之用途，其中該複合物質係藉由使新苯聚羧酸化合物與金屬陽離子錯合或用金屬陽離子囊封新苯聚羧酸化合物來製備。本發明亦係關於一種製備新苯聚羧酸化合物之方法及該化合物在化妝、營養及醫藥組成物中之使用方法。
