@article{oai:repository.naro.go.jp:00004740, journal = {Sweetpotato Research Front, Sweetpotato Research Front}, month = {Mar}, note = {Cover Story: ・Thinking about sweetpotato research and expectations for SPORF Research Paper: ・Newfound Sweetpotato Spirits"AKA-KIRISHIMA" made from Purple-fleshed Variety"Murasakimasari" ・Effect of Koji Extract on Polyphenolic Components ・Ayakomachi: New Sweetpotato Cultivar for Cooking Material and Table Use Research News: ・Report of 13th Symposium of the International Society for Tropical Root Crops Held in Tanzania ・Report of 17th Annual Meeting on Root-Crop Research}, pages = {1--6}, title = {Sweetpotato Research Front No.17}, volume = {17}, year = {2004} }