@article{oai:iidawjc.repo.nii.ac.jp:00000100, author = {川俣, 幸一}, journal = {飯田女子短期大学紀要, Bulletin of Iida Women's Junior College}, month = {May}, note = {application/pdf, The purpose of this study is to examine the circumstances surrounding food poisoning by hydrangea tea in recent years in Japan, and to research the safety of drinking this type of tea. Two types of questionnaires were created. One of them regards food poisoning by hydrangea tea and was sent to one government agency and three local governments. All four agencies have administrative jurisdiction regarding hydrangea tea consumer consumption safety. The other questionnaire regarded the safety of drinking the tea and was sent to two local governments famous for hydrangea tea production, two major hydrangea tea companies, and two leading professors in the field of hydrangea tea. The results of the questionnaires on food poisoning by hydrangea tea indicated that food poisoning by hydrangea tea is caused by drinking highly concentrated hydrangea tea. The administrations also stated that hydrangea tea is safe to drink within its suggested concentration. The results of the questionnaires on hydrangea tea safety report the same findings. No government agencies, companies, or professors who answered our questionnaires, however, could give definitive findings concerning the safety of freezing and heating (in excess of 200 degree Celsius) hydrangea tea. In conclusion, despite a variety of opinions about hydrangea tea spreading on the internet, we believe it is safe for an adult to drink two to three cups of hydrangea tea per day with 0.2% to 0.3% concentration. Further examinations will be required to determine the safety of freezing and heating (in excess of 200 degree Celsius) hydrangea tea.}, pages = {91--99}, title = {甘茶喫飲の安全性に関する一考察 ―2012年度に実施した調査報告―}, volume = {30}, year = {2013} }