Goji (Fruits of Lycium Spp.): Traditional Uses, Quality Assessment, and Value Chain Analysis
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Zurich Open Repository and Archive University of Zurich Main Library Strickhofstrasse 39 CH-8057 Zurich www.zora.uzh.ch Year: 2018 Goji (fruits of Lycium spp.): traditional uses, quality assessment, and value chain analysis Yao, Ruyu Posted at the Zurich Open Repository and Archive, University of Zurich ZORA URL: https://doi.org/10.5167/uzh-152761 Dissertation Published Version Originally published at: Yao, Ruyu. Goji (fruits of Lycium spp.): traditional uses, quality assessment, and value chain analysis. 2018, University of Zurich, Faculty of Science. Goji (Fruits of Lycium spp.): Traditional Uses, Quality Assessment, and Value Chain Analysis Dissertation zur Erlangung der naturwissenschaftlichen Doktorwürde (Dr. sc. nat.) vorgelegt der Mathematisch-naturwissenschaftlichen Fakultät der Universität Zürich von Ruyu Yao aus der V.R. China Promotionskommission Prof. Dr. Peter H. Linder (Vorsitz) Dr. Caroline S. Weckerle Prof. Dr. Michael Heinrich Prof. Dr. Elena Conti Prof. Dr. Chunlin Long (externes Gutachten) Prof. Dr. Salvador Cañigueral (externes Gutachten) Zürich, 2018 ACKNOWLEDGMENTS This PhD project is financially supported by Chinese Government Scholarship (No. 201306910001) and Claraz Schenkung. These funds are sincerely acknowledged. I meet the long winter of Zurich for the fifth time. The botanical garden likes the cold but lively Swiss winter, by when it is embraced by the odorous witch hazels (Hamamelis mollis Oliver), dressed up by the shy snowdrops (Leucojum spp.), and kissed by the passionate saffron (Crocus spp.). Everything is just as beautiful as the the first sight we met, however, for me, it is the time to leave. To bid farewell to some place where you wrote lots of stories (include but not limited to the academic articles) is never comfortable, and gratitudes are always to the fullest to the nice people there. Firstly, I would like to thank my PhD supervisor Dr. Caroline Weckerle. She is a knowledgeable ethnobotanist and her insightful opinions help me a lot with the whole PhD project. Her kind supports on my scholarship application, conference attendances, admission in UZH, extension stay in Zurich, manuscript revisings, and many other difficult issues are very critical. I would not have such a good chance to study here without her help. Sencondly, I would express my sincere gratitude to Prof. Dr. Michael Heinrich. As my co-supervisor, he gave me generous supports on both science and life. Most of the time, he is like a friend; sometimes, he is like a supervisor, but this is enough to be a good one; and sometimes, he is like a father. His experienced viewpoints inspired my ideas a lot. His enthusiasm and real-time responses encouraged me to work hard. During my stay in London, he always shared his teas (lemon grass was super) as well as the art of life with me. I would miss the branch of goji he picked for me on his way home, the sweet figs in his garden, and the quiet Halloween we spent together in 2016. Meanwhile, I would also like to thank Susanne, Mrs Heinrich, for her nice introductions to the museums in London and the delicious German foods. My special thanks go to Prof. Dr. Peter Linder and Prof. Dr. Elena Conti for being my PhD committee members. As the faculty member, Peter’s acceptance is critical for me to start 1 here. Their insightful comments are very helpful to my study, which corrected my serious errors and supplemented important information from their professional perspectives. I would also like to thank Dr. Eike Reich. Being the head of CAMAG Laboratory, he is often very busy; however, he can always find time to help me when I have questions, and his experienced opinions are inspiring and useful, which makes me feel the reliable Swiss quality. I would like to thank the diligent and pragmatic CAMAG people, Eliezer Ceniviva, Dr. Tiên Do, Débora Frommenwiler, and Dr. Anita Ankli, for their patient guidance on my experiments. My sincere thanks to Prof. Dr. Xingfu Chen and Dr. Yuanfeng Zou, for their kind support with my labworks and fielworks in China, as well as their intimate concerns. During those years we spent together, their directions were important to my life. Many thanks to them. Sincere thanks to Prof. Dr. Yong Peng and Mr. Zigui Wang, my counterparts in China. Both of them are experts of goji, and they offered critical help during my fieldworks in China. Mr. Wang is a pragmatic entrepreneur; when I was in Ningxia, he accompanied me to the rural regions to collect specimens, shared his knowledge on goji industry, collected folk stories and organized the papercuts, etc.. I could not imagine how tough the fieldwork would be without his support. I would also like to express my gratitude to the institute members. My respect to Prof. em. Dr. Peter Endress, who often works even on Saturdays; and his hardworking explains what “Prof. em.” stands for; I was so luckly to have an opportunity to consult him, with a thoughtful answer. Thanks to Ms. Claudia Winteler who helped with my enrollment and my first residence permit. Ms. Corinne Blunt helped with almost all the German documents issues, transition accommodation, and many other problems I met with agencies and funding; while Mr. Claudio Brun did very helpful work as well. Martin Spinnler, Niklaus Müller, Dr. Alex Bernhard, Josefine Jacksch, and Franziska Schmid offered important help. Dr. Franz Huber helped with experiments and data analysis, while Dr. Gary Stafford, Dr. Maja De Cero, Meadhbh Costigan, Nino Giacomelli, and Eliane Schneider gave useful suggestions.Thanks 2 to Dr. Yaowu Xing, Dr. Jing Cai, Dr. Pengjuan Zu, Lirui Zhang, Ziming Zhong, Orlando Schwery, Roman Kellenberger, for their accompanies and help. Many thanks to people assisted my work out of institute. Yu Chen, Zhongkai Zhu, and Zhengming Yang (Sichuan Agricultural University), and Jianhua Li, Xiao Wang, En’ning Jiao (Institute of Gouqi, Ningxia Academy of Agriculture and Forestry Sciences) helped with the labworks and fieldworks. Dr. Fang Tan, Wei Wang, Jiechao An, Jun Liu, Tao Liu, Peng Wang, and Shihui Tian offered important samples and interviews. Xiaolei Zhang, Ruizhu Huang, and Wuyan Wang helped with my experiments and data analysis. Dr. Anthony Booker, Ka Yui Kum and Jennifer B. Chang helped with the metabolomic analysis in London. I would also like to extend my thanks to my friends. Dr. Yanfeng Liu is a modest, knowledgeable, and obliging person, I really enjoy the time we spent together: we had dinners, went travellings, joined parties, went hikings, and his lettuce is one of my favorite dishes. Yuheng Zhang is very social and literary, and he helped me a lot when I started here. We had profound discussions referring to anything no matter we know it or not; he often organized mahjong games, the games were funny, and the non-Chinese players can make them even more interesting when they used the “Wan” and German words; we often celebrated birthdays or festivals together, during which he may produce beautiful poems or make enjoyable jokes. Dr. Libing Huang, we often call him uncle Huang, is very open-mind, athletic, caring, and respectable. His poems after few glasses of gin tonic were graceful; his paces in the mountains were vigorous; as a linguist, his translations which included the cultural factors were thought-provoking; his cooking, such as Huang’s Xiangshengji, were attractive; his photos, well, were our happiness records; as an elder, his enlighten words were the coal in snow. Hualin Liu, with whom I grew up, broadened my horizon on China with his rich social experience; as well, he offered critical help with my fieldwork, and gave me brotherly care from distance. Sincere thanks to Cheng Li and my cousin Qian Huang for helping me with my application. Many thanks to Kun He, Tao Zhou, Yinghui Wang, Wuyan Wang, Jing Xue, Dr. Qian Zhang, Dr. Xiwei Xu, Dr. Ziqiang Huang, Dr. Chun Chen, Huili 3 Zhao, Chunyue Wei, Dr. Yuanyuan Huang, Anita Molnár, Laurent Montigny, Vanja De Paiva, and Daniel De Paiva, for sharing happy times and interesting stories in the quiet and lonely Zurich. My deepest thanks to my family, for their persistent support, understanding, and priceless love! Ruyu Yao 1st March 2018, Zurich 4 TABLE OF CONTENTS ACKNOWLEDGMENTS .................................................................................................................... 1 TABLE OF CONTENTS ...................................................................................................................... 5 AUTHOR CONTRIBUTIONS TO CHAPTERS ............................................................................... 6 ZUSAMMENFASSUNG ...................................................................................................................... 7 SYNOPSIS ........................................................................................................................................... 9 GENERAL INTRODUCTION .......................................................................................................... 11 CHAPTER 1 ........................................................................................................................................ 19 CHAPTER 2 ........................................................................................................................................ 39 CHAPTER 3 ........................................................................................................................................ 53 SUMMARY ........................................................................................................................................