Supplementary Table 1 GABA Contents in Pu-Erh Tea Sample Name Manufacturer Producing Area Storage Years GABA Content (Mg/100G)

Supplementary Table 1 GABA contents in pu-erh tea Sample name Manufacturer Producing area Storage GABA content years (mg/100g)

Raw material Nan Jian Phoenix Nanjian County, Dali, 0.5 13.7 from first Tuocha Tea Yunnan industrial Factory fermentation 1st Turning from Nan Jian Phoenix Nanjian County, Dali, 0.5 15.4 first industrial Tuocha Tea Yunnan fermentation Factory 2nd Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 13.9 first industrial Tuocha Tea Yunnan fermentation Factory 3rd Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 12.6 first industrial Tuocha Tea Yunnan fermentation Factory

4th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 10.0 first industrial Tuocha Tea Yunnan fermentation Factory 5th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 8.4 first industrial Tuocha Tea Yunnan fermentation Factory 6th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 4.7 first industrial Tuocha Tea Yunnan fermentation Factory 7th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 2.4 first industrial Tuocha Tea Yunnan fermentation Factory Raw material of Nan Jian Phoenix Nanjian County, Dali, 0.5 12.3 second Tuocha Tea Yunnan industrial Factory fermentation 1st Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 14.5 second Tuocha Tea Yunnan industrial Factory fermentation 2nd Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 11.9 second Tuocha Tea Yunnan industrial Factory fermentation 3rd Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 12.1 second Tuocha Tea Yunnan industrial Factory fermentation 4th urning of Nan Jian Phoenix Nanjian County, Dali, 0.5 11.3 second Tuocha Tea Yunnan industrial Factory fermentation 5th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 7.2 second Tuocha Tea Yunnan industrial Factory fermentation 6th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 4.6 second Tuocha Tea Yunnan industrial Factory fermentation 7th Turning of Nan Jian Phoenix Nanjian County, Dali, 0.5 2.8 second Tuocha Tea Yunnan industrial Factory fermentation Yunnan Menghai Liming Xishuangbanna,Yunnan 1 1.4 Menghai Tea Factory Qizibing pu-erh Tea 3rd Grade King of pu-erh Ninger County, Puer , 1 5.6 loose leaf industry group Co., Yunnan pu-erh tea Ltd. 3rd Grade Yunnan Haiwan MengHai Country, 1 1.8 loose leaf Tea Industry Co., Xishuangbanna,Yunnan pu-erh tea Ltd. 5th Grade Yunnan Haiwan MengHai Country, 1 1.1 loose leaf Tea Industry Co., Xishuangbanna,Yunnan pu-erh tea Ltd. 9th Grade Yunnan Haiwan MengHai Country, 1 0.4 loose leaf Tea Industry Co., Xishuangbanna,Yunnan pu-erh tea Ltd. DaYi pu-erh tea Menghai Tea MengHai Country, 1 1.3 (7552) Factory Xishuangbanna,Yunnan DaYi pu-erh tea Menghai Tea MengHai Country, 1 0.9 (7572) Factory Xishuangbanna,Yunnan DaYi pu-erh tea Menghai Tea MengHai Country, 1 1.0 (7592) Factory Xishuangbanna,Yunnan Lan xiang gui qi Yunnan Lincang City, Yunnan 1 1.1 pu-erh tea Yongxingxiang tea Industry Co., Ltd. Menghai Menghai Xinghai MengHai Country, 1 0.7 qizibing pu-erh Tea Factory Xishuangbanna,Yunnan tea Lan xiang gui qi Lanchafang Lin cang city, Yunnan 2 2.3 pu-erh tea High-gread King of pu-erh Ninger County, Puer , 2 1.8 loose leaf industry group Co., Yunnan pu-erh tea Ltd. Menghai Menghai Fuhai Tea MengHai Country, 2 0.6 qizibing pu-erh Factory Xishuangbanna,Yunnan tea 7th Grade Yunnan Kunming, Yunnan 2 0.5 loose leaf Wanhongyang tea pu-erh tea Industry Co., Ltd. Dianhong Yunnan Dianhong Fengqing Lincang City, 2 0.4 ripped pu-erh Group Co., Ltd Yunnan tea xiaguan mini Xiaguan Tea Dali, Yunnan 2 3.6 tuocha Factory Menghai Menghai Fuhai Tea MengHai Country, 3 2.0 qizibing pu-erh Factory Xishuangbanna,Yunnan tea Purple Label Yunnan Kunming, Yunnan 3 0.8 pu-erh tea Wanhongyang tea (Zhiying) Industry Co., Ltd. Red Label Yunnan Kunming, Yunnan 3 0.8 pu-erh tea Wanhongyang tea (Hongying) Industry Co., Ltd. Yellow label Yunnan Kunming, Yunnan 3 0.8 pu-erh tea Wanhongyang tea （Huangying ） Industry Co., Ltd. Longrun pu-erh Yunnan LongRun Lincang City, Yunnan 3 2.8 ripping tea Tea Group Co. Ltd. Aspergillus Yunnan Kunming, Yunnan 3 1.0 niger cake Wanhongyang tea pu-erh tea Industry Co., Ltd. Trichoderma Yunnan Kunming, Yunnan 3 1.2 viride cake Wanhongyang tea pu-erh tea Industry Co., Ltd. Shengye Shengye High Lincang, Yunnan, China 3 0.9 pu-erh tuocha mountain Ecological tea Industry Co., Ltd. Shengye Shengye High Lincang, Yunnan, China 3 2.3 pu-erh tea raw mountain material Ecological tea Industry Co., Ltd. Shengye Old Shengye High Lincang, Yunnan, China 3 3.5 Tea Tree mountain un-fermented Ecological tea tuocha Industry Co., Ltd. Imperial Grade Shengye High Lincang, Yunnan, China 3 2.1 loose leaf mountain pu-erh tea Ecological tea Industry Co., Ltd. High-Grade Shengye High Lincang, Yunnan, China 3 2.9 loose leaf mountain pu-erh tea Ecological tea Industry Co., Ltd. 1st Grade loose Shengye High Lincang, Yunnan, China 3 2.3 leaf pu-erh tea mountain Ecological tea Industry Co., Ltd. 3rd Grade Shengye High Lincang, Yunnan, China 3 3.0 loose leaf mountain pu-erh tea Ecological tea Industry Co., Ltd. 5th Grade Shengye High Lincang, Yunnan, China 3 2.6 loose leaf mountain pu-erh tea Ecological tea Industry Co., Ltd. 7th Grade Shengye High Lincang, Yunnan, China 3 3.8 loose leaf mountain pu-erh tea Ecological tea Industry Co., Ltd. Nanjian Nan Jian Phoenix Nanjian County, Dali, 4 0.9 Phoenix pu-erh Tuocha Tea Yunnan Tuocha (Tulin) Factory Pu-erh Tuocha Nanjian Heilongtan Nanjian County, Dali, 4 0.9 (Tulin) Tea Factory Yunnan Yunnan Nanjian Phoenix Nanjian County, Dali, 4 0.7 Phoenix pu-erh Tuocha Tea Yunnan Tuocha Factory Tea science Kunming Yunpu Kunming, Yunnan 6 1.4 kind-fund Tea Factory Yellow Label pu-erh tea Scientific Kunming Yunpu Kunming, Yunnan 6 1.5 Purple Label Tea Factory pu-erh Scientific Red Kunming Yunpu Kunming, Yunnan 6 1.2 Label pu-erh Tea Factory Longji-shunde- Kunming Yunpu Kunming, Yunnan 6 1.7 kind-fund Tea Factory pu-erh tea Red mellow Kunming Yunpu Kunming, Yunnan 6 1.5 pu-erh tea Tea Factory Ancient Route Kunming Yunpu Kunming, Yunnan 6 2.9 cake Pu-erh tea Tea Factory Standard Kunming Yunpu Kunming, Yunnan 6 1.4 sample of Tea Factory High-gread loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 6 1.6 sample of 1st Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 6 2.7 sample of 3rd Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 6 0.5 sample of 5th Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 6 2.2 sample of 9th Tea Factory Grade loose leaf pu-erh tea Pingchang Kunming Yunpu Kunming, Yunnan 7 0.9 cake Pu-erh tea Tea Factory Feidian cake Kunming Yunpu Kunming, Yunnan 7 0.9 Pu-erh tea Tea Factory Purple mellow Kunming Yunpu Kunming, Yunnan 7 1.5 Pu-erh tea Tea Factory Caravan Pu-erh Kunming Yunpu Kunming, Yunnan 7 3.2 Tea cake Tea Factory Tushi brick Kunming Yunpu Kunming, Yunnan 7 0.7 Pu-erh tea Tea Factory Standard Kunming Yunpu Kunming, Yunnan 7 1.3 sample of Tea Factory High-gread loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 7 1.4 sample of 1st Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 7 0.7 sample of 3rd Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 7 1.1 sample of 5th Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 7 1.0 sample of 7th Tea Factory Grade loose leaf pu-erh tea Standard Kunming Yunpu Kunming, Yunnan 7 0.9 sample of 9th Tea Factory Grade loose leaf pu-erh tea Yunnan Kunming Yunpu Kunming, Yunnan 8 1.4 provincial fund Tea Factory Yellow Label Pu-erh tea Yunnan Kunming Yunpu Kunming, Yunnan 8 1.4 provincial fund Tea Factory Purple Label pu-erh tea Department of Kunming Yunpu Kunming, Yunnan 10 0.9 tea science Tea Factory Red Label Pu-erh tea Department of Kunming Yunpu Kunming, Yunnan 10 1.8 tea science Tea Factory Purple Label Pu-erh tea Scientific Kunming Yunpu Kunming, Yunnan 10 1.2 Yellow Label Tea Factory Pu-erh

Supplementary Table 2 GABA contents in other types of tea type Sample name Producing area Producing GABA content years (mg/100g) Green tea Huang shan Huangshan, Anhui 2009 13.8 maofeng Green tea Shifeng longjing Hangzhou , Zhejiang 2009 33.9 Green tea High-grade Green Shandong Province 2009 24.3 tea Green tea Taiping kowkui Huangshan, Anhui 2009 20.4 Green tea Longrun biluochun Lingcang, Yunnan 2009 3.9 Green tea Huilong tea Dehong, Yunnan 2010 15. 0 Green tea Shifeng longjing Hangzhou , Zhejiang 2010 40.1 Green tea Dalishu Dali, Yunnan 2010 18.6 Green tea Laomudeng Lvjiang, Yunnan 2010 4.2 biluochun Green tea Taiping kowkui Huangshan, Anhui 2010 8.8 Green tea Liuan guapian Jingzai, Anhui 2010 26.8 Green tea zhuyeqing Emei Mountain,Sichuan 2010 17.9 Green tea Baizhi pure green Puer, Yunnan 2010 8.4 tea Oolong tea Pong-Fong tea Taiwan 2007 32.0 (Oriental Beauty tea) Oolong tea High Mountain Chiayi County, Taiwan 2009 12.1 oolong Tea Oolong tea Jinjiang Yuan Jinjiang Yuan, Anxi 2009 15.8 tieguanyin City, Fujian Oolong tea Wuyi Iron Arhat Wuyi Mountain, Fujian 2008 16.4 Oolong tea Wuliang Mountain Dali city, Yunnan 2009 20.7 Organic tea Oolong tea Gui Fei Oolong tea Nantou County, Taiwan 2008 14.8 Oolong tea Anxi Tieguanyin Anxi City, Fujian 2009 7.2 Oolong tea Yan rui Shuixian Wuyi Mountain, Fujian 2009 7.9 oolong tea Black tea Yunnan black tea Fengqing County, 2007 31.1 Lingcang , Yunnan Black tea Bailin Congou tea Bailin, Fujian 2009 44.4 Black tea Black tea Shandong Province 2009 24.7 Black tea Ying Hong Jiu-hao Yingde County, 2008 8.8 black tea Guangdong Black tea Baizhi Black Tea Puer City, Yunnan 2009 9.5 Black tea Keemun Black Tea Qimen, Huangshan 2009 41.5 City ， Anhui Black tea Longrun gongfu Lingcang , Yunnan 2009 9.5 black tea Black tea Baizhi black tea Puer City, Yunnan 2010 13.7 White Tea White Peony Fuding City, Fujian 2007 49.7 White Tea White Peony Fuding City, Fujian 2009 36.8 White Tea Fuding White Tea Fuding City, Fujian 2009 50.5 GABA tea Heshengyuan Anxi City, , Fujian 2010 349.8 GABA Tieguanyin Health tea GABA tea Heshengyuan Anxi City, , Fujian 2010 404.9 GABA Tieguanyin Health tea bag GABA tea Heshengyuan Anxi City, , Fujian 2010 168.5 GABA Tieguanyin GABA tea Long guan GABA Hangzhou, Zhejiang 2010 196.5 green tea