To enhance your review on biopolymer synthesis and derivatization, integrate a section discussing various characterization techniques (e.g., FTIR, NMR) and summarize key findings from previous studies that highlight their importance. Incorporating characterization results from relevant literature will strengthen your review by linking empirical evidence to the properties of biopolymers. This approach will effectively address the editor's request and enrich your article.

Dear all, the previous study is it yours or it is of someone else? If it is published, you have just to add it with the reference article. If it is an unpublished data of you or another researcher, just put in the reference section the mention ' unpublished data with permission '. My Regards