Abstract of a thesis doctor of Philosophy in biology: Atudy on the composition, distribution of Amorphophallus Spp. tubers containing glucomannan and selection of species which has the potential to be grown in some northern provinces in Vietnam

Aims of the study: Assess the composition and distribution of Amorphophallus genus (Amorphophallus spp.) contains glucomannan in some northern provinces in Vietnam; choosing the Amorphophallus species that has high level of glucomannan and developing potential for reproduction and growing in some norther provinces in Vietnam; testing the reproduction and growing of the candidate species in some northern provinces in Vietnam.
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Abstract of a thesis doctor of Philosophy in biology: Atudy on the composition, distribution of Amorphophallus Spp. tubers containing glucomannan and selection of species which has the potential to be grown in some northern provinces in Vietnam MINISTRY OF EDUCATION VIETNAM ACADEMY OF SCIENCE AND TRAINING AND TECHNOLOGY GRADUATE UNIVERSITY SCIENCE AND TECHNOLOGY ----------------------------- TRAN VAN TIEN STUDY ON THE COMPOSITION, DISTRIBUTION OF AMORPHOPHALLUS SPP. TUBERS CONTAINING GLUCOMANNAN AND SELECTION OF SPECIES WHICH HAS THE POTENTIAL TO BE GROWN IN SOME NORTHERN PROVINCES IN VIETNAM Major: Botany Code: 62.42.01.11 ABSTRACT OF A THESIS DOCTOR OF PHILOSOPHY IN BIOLOGY HA NOI - 2017 This thesis was fulfilled at Graduate University of Science and Technology Supervisors: 1: Dr. Nguyen Van Du 2: Assoc. Prof. Dr. Ha Van Huan Reviewer 1: …............................................................................................ Reviewer 2: …............................................................................................ Reviewer 3: …............................................................................................ The thesis will be defended at the University of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Ha Noi City, 2017 The thesis can be found at: The National Library of Vietnam Library University of Science and Technolog INTRODUCTION 1. Rationales of study Some of the species in Amorphophallus genus. From Araceae family that contains glucomannan, one of the sugars with large molecular that has chain structure and already being grown in many countries in the world such as Japan. China, India in order to harvest the root for food and functional food production. According to Chua M., Baldwin TC., Hocking TJ., Chan K. (2010), the root of some species in Amorphophallus genus has glucomannan, a water-soluble polysaccharide. Products containing glucomannan in Amorphophallus’s root has glucose control capability in blood, reducing the lipid levels in the blood, and decrease the hungry in obese people. In Vietnam, the root has been used in traditional dishes from a long time ago in local ethnic groups in some northern provinces in the country. However, Amorphophallus has only been harvested in a small scale in some local areas and these dishes are prepared like some kind of tofu, called “Mò gỉ” (Nùng language) or “Cò ký thơ” (Mông language), noodle, fried bread….. (Nguyen Van Du, 2012). Studies about the Amorphophallus in Vietnam show some species in this genus contains glucomannan, their distribution characteristics, and there have been some studies on the reproduction and growing of these plants. In addition, according to the General Statistic Office of Vietnam in 2016, the local people in mountainous area in Northern Vietnam has per capita income of only 337.2 thousand VND/ month. Since their income are low, the poverty rate is very high, at 41.42%, and many houses lack food in 2-6 months/year/. Therefore, in order to make Amorphophallus as an agriculture product for economic development in northern Vietnam, study about this plant and its reproduction and growing method is valuable for the economic and essential. With the reasons above, the author chose the present study “Study on the composition, distribution of Amorphophallus spp. tubers containing Glucomannan and selection of species which has the potential to be grown in some Northern provinces in Vietnam” as scientific thesis. 2. Aims of the study - Assess the composition and distribution of Amorphophallus genus (Amorphophallus spp.) contains glucomannan in some northern provinces in Vietnam. - Choosing the Amorphophallus species that has high level of glucomannan and developing potential for reproduction and growing in some norther provinces in Vietnam. - Testing the reproduction and growing of the candidate species in some northern provinces in Vietnam. 3. Main contents of the study - Investigate and assess the species, their distribution and local knowledge about Amorphophallus containing glucomannan in northern Vietnam. - Study the characteristics, growing, development and select the species which has high level of glucomannan and developing potential in some provinces in Northern Vietnam. 1 - Study about some reproduction technologies for the species which has high level of glucomannan and developing potential in some provinces in Northern Vietnam. - Study about the growing and development of Amorphophallus konjac in some provinces in Northern Vietnam. 4. Scientific and practical meaning of the study - Scientific meaning: the result of the present thesis contribute into the completion of the knowledge about Amorphophallus spp. in Vietnam. In addition, the results can be used for further study in the various arts relating to Amorphophallus. - Practical meaning: it is a scientific base for development some Amorphophallus species containing high level of glucomannan in Vietnam, which can be used in functional food production and other fields. 5. Design of the study Besides the introduction, summary, suggestions, references and appendix, the thesis consists of three parts: Chapter 1: General study – 25 pages, Chapter 2: subject, content, and method of the study – 22 pages, Chapter 3: The result of the study and discussion – 70 pages. CHAPTER 1 OVERVIEW OF RESEARCH 1.1. Research on Amorphophallus 1.1.1. Location and Classification of the genus Amorphophallus According to the dictionary of Vietnamese ...