2019 Global Tea Initiative Colloquium Tea Research from
2019 Global Tea Initiative Colloquium Tea Research from Appreciation, Bioactivities to Health Prof. P. C. Leung State Key Laboratory of Research on Bioactivities and Clinical Applications of Medicinal Plants (The Chinese University of Hong Kong) 1
Tea as a Beverage for Leisure 綠茶 Green Tea 紅茶 Red Tea 白茶 White Tea 黃茶 Yellow Tea 黑茶 Black Tea 2
Personal Choices – Subjective Preferences Expert Evaluation – Rating Scheme basing on Experts Establishment of scientific platforms for tea-rating 建立檢測各類名茶的科技平台 按照各類茶的文字記載及質素 共識,制定優質的客觀判斷標 準,作為鑑定依據。茶種以普 洱開始,鐵觀音、大紅袍隨後。 Pu-erh Tea STAR Rating Scheme 優質茶葉星級認證計劃(普洱)
Black Tea (Pu-erh) Star Rating Scheme Expert Rating considered more important Story of Pu-erh under Hong Kong Storage 4
We Propose Additional • Chemical contents • Anti oxidant effects 喝茶保健養生研究 Special Program for the study of Health Benefits of Tea
Common chemical contents & Anti Oxidant Effects 1. 總多酚Total polyphenol 2. 總多糖Soluble polysaccharides 3. 胺基酸Amino acids 4. 水提物份量Tea water extracts 5. 咖啡碱Caffeine Specific parameters EGCG↓ lipoxygenase ↓TPA induced oxidative DNA 6
Tea as Health Supplement 7
Special Program on Tea Study Evidence-based studies on the Health Benefits of Tea Drinking n Cardiovascular Health n Osteoporosis protection n Metabolic Syndrome n Anti-bacterial effects n Smooth Muscle Relaxation
Metabolic X Syndrome 代謝綜合預防 Osteoprotection 骨骼保養 Control of LDL & BW Green, Yellow, Red, Black Tea Cardiovascular Health 心血管保養
綠茶對牙周炎作用 Effects of Green Tea on Periodontitis v 牙周炎 Periodontitis – 發炎病症 Inflammatory disease – 牙菌膜和菌斑堆積加重 Formation and accumulation of biofilm and dental plaque – 牙周致病菌感染向齦下擴延 Bacterial/fungal infections of gums 綠茶的作用 Effects of green tea: v 抗菌生長 Anti-microbial effects v 抗炎作用 Anti-inflammation 防止牙周炎引起的牙槽骨吸收 v Prevent bone resorption – 導致牙槽骨吸收, 出現牙齒鬆動、 移位等現象 Leads to bone resorption, deep pockets and loose teeth 10
A New Initiative Tea as Specific Supplement to Counteract Ailment Development of tea-related health supplement 開發茶類保健食品 1. 2. 3. 4. 5. Cardiovascular Health 心血管保養 Osteoporosis 骨骼保養 Metabolic X Syndrome 預防代謝綜合症 Periodontal disease 防治牙周病 排尿保養
Idea Taken from Tradition An Old Brand of Black Tea Fermented with Complex Herbal Formula “Good for all Ailments” Crude Fermentation Popular Product 甘和茶 盒仔荼 “Sweet Harmonizing Tiny Tea Box” 12
A Modification n Choice of Stable Brand of Moderate Fermentation – Red Tea n Start with Common Ailment Targets Cold and Flu Allergy Metabolic Syndrome Fatigue n Selection of Medicinal Herbs accordingly n Mix Red Tea with selected herbs to undergo standard Fermentation Process n Finish Products to be rated by tea experts n Choose product of best appreciation 13
Red Tea and Herbs Standard Fermentation Desiccation Elixer Camellia 1 Removes Cold Elixer Camellia 2 Removes Itchiness Elixer Camellia 3 Removes Fat Elixer Camellia 4 Removes Strength Automated Fermentation Box Controlled Temp/Moisture/Time EC 1 EC 2 EC 3 EC 4 14
Elixer Camellia EC 1 – Anti Cold & Flu 大青葉 Isatidis 防風 Ledebourilella EC 3 – Removes Fats 五味子 Crataegus 苦瓜 Momordica EC 2 – Anti-itch 牡丹皮 Paeone 紫蘇葉 Lithospermem EC 4 – Energizes 黃精 Polygonatum 密蒙花 Buddleja 15
Authentication Chemical Finger Prints Example of EC 2 Tea alone Tea + Paeone Essential peaks of Camellia & Paeone are well maintained (Simple Bio-activities would follow) 16
The outcome product is not Medicinal Tea But Tea with special Health Support as Leisure Beverage 17
China’s recent Aspirations on Health Supplements 2015 Food supplements with specific medical indications – Registration and control 2016 Food supplements with specific medical indications – working and evaluation instructions 2017 Food supplements with specific medical indications – instructions for clinical trial 2018 Food supplements with specific medical indications – Priorities set for babies, young mothers and elderlies Choice of Herbs partnering with Tea would follow direction of production of Medicinal Supplements
Two Beverages with Unlimited Adorations Coffee and Tea 19
Composition of Coffee Bean and Tea Constituent Polyphenols Carbohydrates Caffeine Protein Aminoacids Lignin Organic acids Lipids Ash Chlorophyll % of Dried Leaf 37. 0 25. 0 3. 5 15. 0 4. 0 6. 5 1. 5 2. 0 5. 0 0. 5 TEA Components Caffeine Lipids Proteinsb Carbohydrates Trigonelline, Niacin Aliphatic acids Chlorogenic acids Volatile compounds Minerals Melanoidinsc Content (% )a Arabica Robusta 1. 3 2. 4 17. 0 11. 0 10. 0 38. 0 41. 5 1. 0 0. 7 2. 4 2. 5 2. 7 3. 1 0. 1 4. 5 4. 7 23. 0 COFFEE 20
Benefits of Coffee & Tea Coffee n n n Anti oxidant Anti inflammation Anti cancer Liver protection Helps Neurodegeneration Tea n n n Anti oxidant Anti inflammation Anti cancer Skin protection Helps Neurodegeneration Metabolic rate Tooth decay Aging 21
Cardiovascular effects of Caffeine Moderate Consumption 400 -600 mgm/day (< 4 cups) No cardiac risks – arrhythmia, BP not related Large Consumption – BP, Cerebral blood flow, (> 4 cups) plasma homocysteine Disturbs Sleep Precautions on Coffee Dependence could be noted 22
Commercial Value Coffee House most impressive Tea Houses Only Beginning 23
Over 3000 Years of Appreciation Has Revealed Much Mysterious Nature of TEA n Solubility of chemical contents is high n Different Processings give Divergent Colours Tastes & Flavour n Chemical contents are highly stable & Soluble n Fermentations bring unexplained merits on Taste & Flavor n Health Values are Impressive 24
Are the Promises of Tea Houses under-valued? Thank you 25
- Slides: 25