Editing Oolong (section)

==Characteristics==

===Caffeine===
Oolong contains caffeine,<ref>{{cite news |last1=Metropulos |first1=Megan |last2=Ware |first2=Megan |date=September 6, 2017 |title=What are the health benefits of oolong tea? |work=Medical News Today |url=https://www.medicalnewstoday.com/articles/319276.php#potential-health-benefits-of-oolong-tea |access-date=28 December 2019}}</ref> although the [[caffeine]] content in tea will vary based on [[terroir]], when the leaf is plucked, and the production processes.

===Teaghrelins===
Some semi-oxidized oolong teas contain acylated [[flavonoid]] [[glycoside|tetraglycosides]], named [[teaghrelins]] due to their ability to bind to [[ghrelin]] receptors. Teaghrelins were isolated from Chin-shin oolong tea<ref name="Lo">{{cite journal | title = Teaghrelins, Unique Acylated Flavonoid Tetraglycosides in Chin-Shin Oolong Tea, Are Putative Oral Agonists of the Ghrelin Receptor | journal = Journal of Agricultural and Food Chemistry | volume = 62 | issue = 22 | pages = 5085–5091 | doi = 10.1021/jf501425m | pmid = 24832927 | year = 2014 | last1 = Lo | first1 = Yuan-Hao | last2 = Chen | first2 = Ying-Jie | last3 = Chang | first3 = Chi-I | last4 = Lin | first4 = Yi-Wen | last5 = Chen | first5 = Chung-Yu | last6 = Lee | first6 = Maw-Rong | last7 = Lee | first7 = Viola S. Y. | last8 = Tzen | first8 = Jason T. C. | bibcode = 2014JAFC...62.5085L }}</ref> and Shy‐jih‐chuen oolong tea<ref>{{cite journal |last1=Li |first1=Yue-Chiun |last2=Wu |first2=Chieh-Ju |last3=Lin |first3=Yi-Chiao |last4=Wu |first4=Ruo-Hsuan |last5=Chen |first5=Wen-Ying |last6=Kuo |first6=Ping-Chung |last7=Tzen |first7=Jason T. C. |year=2019 |title=Identification of two teaghrelins in Shy-jih-chuen oolong tea |journal=Journal of Food Biochemistry |volume=43 |issue=4 |pages=e12810 |doi=10.1111/jfbc.12810 |pmid=31353599 |s2cid=104458999|doi-access=free }}</ref> and recently from other oolong tea varieties.