PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 17425115-5 2007 Polyphenol oxidase activities with o-diphenolic substrates (caffeic acid, catechol and dopa) were found to be higher than with a monophenolic substrat (tyrosine) in both embryos and endosperms. caffeic acid 60-72 Polyphenol oxidase, chloroplastic Zea mays 0-18 17425115-6 2007 Further, caffeic acid oxidizing polyphenol oxidase was found to show more activity in embryos of the seeds germinating in distilled water when compared to other substrates. caffeic acid 9-21 Polyphenol oxidase, chloroplastic Zea mays 32-50