THAI NGUYEN UNIVERSITY UNIVERSITY OF AGRICULTURAL AND FORESTRY HOANG THỊ LAN OANH RESEARCH OF THE PRODUCTION PROCESS OF TANGERINE MARMALADE AND TANGERINE JAM BACHELOR THESIS Study Mode: Full-time Major: Food technology Faculty: International Programs Office Batch: K49 Thai Nguyen, 2/01/2021 ABSTRACT Thai Nguyen University of Agriculture and Forestry Degree Program Bachelor of Environmental Science and Management Student name Hoàng Thị Lan Oanh Student ID DTN1653040085 Thesis Title Production research and quality evaluation of tangerine jam and tangerine marmalade Supervisor (s) Mr. Pham Bang Phuong Supervisor’s Signature Abstract: The area of tangerine cultivation is increasingly expanding in Vietnam, however, people do not have a market orientation, so the consumption of tangerines becomes more precarious and completely depends on private traders, without ownership grower verb. Currently, in the Vietnamese market, there are many fruit jam products such as grapes, oranges, grapefruits, strawberries, etc. Through the survey, we found that tangerine jam is a new product and people are in need of a source of tangerine consumption.
From that situation, our research team realizes that it is necessary to research and find solutions to improve the value of tangerines in the province by taking advantage of the low-priced, low- priced, and diversified source of tangerine materials chemical products from tangerines such as tangerine peel essential oil, tangerine jam, mandarin jam, etc., in order to open up a new consumption direction for this fruit, bringing higher economic efficiency to people growing tangerines. i Tangerine, Tangerines Jam, Tangerines Marmalade, Keywords: Tangerine Products. Number of pages: 74 Date of Submission: 14/12/2021 ii ACKNOWLEDGEMENT First of all, I want to thank you for all the support you have given me during my 4 years at Thai Nguyen University of Agriculture and Forestry, Advanced Education Program. I studied, and researched my full-time internship program at the Faculty of Biotechnology and Food Technology.
I would like to express my deep gratitude to Master Pham Bang Phuong who enthusiastically instructed and created the best conditions for me to complete this graduation thesis. He pointed out the errors, the nonconformities, and how to fix them during the time here. Once again I sincerely thank my supervisor, and wishing good health for him. Besides, I have received a lot of interest, and help from Mr.
Nguyen Van Quang and my team who interns at the laboratory of the Faculty of Biotechnology – Technology and Technology for helping me throughout the project implementation. I hope that my team will always unite together to solve all difficult things. I wish you guys will find your path, and succeed on the path you choose. Given the limited time as well as experience, the mistake of the thesis cannot be avoided.
I look forward to receiving the guidance, and comments of the teachers so that I can supplement, improve our knowledge, and better serve the practical word in the future. Best regards Thai Nguyen, January 27 2021 Student Hoang Thi Lan Oanh iv TABLE OF CONTENT ABSTRACT. iv TABLE OF CONTENT. v List of Figures.
1 List of Tables. The scientific basis of the thesis. Tangerine peel and tangerine juice overview. Feature of tangerine juice and tangerine peel.
The chemical composition and nutritional value of tangerine juice. Overview of jam products. Jam Citrus products. General process of producting tangerine jam and tangerine marmalade.
General process of producting tangerine jam. General process of producting tangerine marmalade. Tangerine production of some northern provinces in Vietnam. CONTENT AND METHODS.
Survey of demand and sensory assessment of tangerine Jam and Marmalade tangerine products. Research and improve processing of jam and marmalade products from tangerines. Quality assessment of jam and marmalade from tangerine. Food safety assessment based on national standards.
Analyze the composition and indicators of product concern. Evaluation of quality variation of jam and marmalade products from tangerine, preserved under normal conditions. Survey of demand and sensory evaluation of tangerine jam and tangerine marmalade. Approach method and experimental layout.
Research on the ratio of added sugar for the production of tangerine jam. Research on the ratio of added sugar for the production of tangerine marmalade. Study on the ratio of Cyclo Dextrin to the ability to reduce bitterness of tangerine marmalade. Study on the ratio of Citric Acid added to tangerine jam.
Study on the ratio of Citric Acid added to tangerine marmalade. Study on the ratio of pectin affecting the structure of tangerine jam. Study on the ratio of pectin affecting the structure of tangerine marmalade 20 3. Study on the ratio of gelatine to the structure of tangerine jam.
Food safety assessment of microbiological contamination limits. Determination of microorganisms in food according to TCVN 4884-2:2015. Quantitative method of Escherichia coli according to TCVN 7924-1:2008. Analysis of quality parameters of tangerine jam and tangerine marmalade products 26 3.
Determination of moisture (loss in mass at 103 oC) (based on TCVN 9741: 2013). Method for determination of total ash (based on TCVN 9742: 2013). Method of determining vitamin C content (according to TCVN 4715:1989). Method of determining reducing sugar content (according to TCVN 4075:2009).
Evaluation of changes in quality of soluble products of tangerines stored under normal conditions. Sensory evaluation method according to TCVN 3215 – 79. 34 vi PART IV. Survey results on consumer demand for Tangerine jam and Tangerine marmalade.
Analysis of research and improve processing of products. Analysis of research and improve processing of Tangerine Jam. Study on the effect of sugar mix ratio on product quality in tangerine jam. Study on the effect of the ratio of Citric Acid on the ability to adjust taste in tangerine jam.
Study on the effect of Pectin ratio on the structure of tangerine jam. Study on the influence of Gelatine ratio on the structure of tangerine jam. Analysis of research and improve processing of Tangerine Marmalade. Study on the effect of sugar mix ratio on product quality in tangerine marmalade.
Research on optimizing the ratio of Cyclo Dextrin to the ability to remove bitterness at normal temperature. Study on the effect of the ratio of Citric Acid on the ability to adjust taste in tangerine marmalade. Study on the effect of Pectin ratio on the structure of tangerine marmalade 47 4. Perfecting the production process of tangerine jam and tangerine marmalade 49 4.
Completing the production process of tangerine jam. Completing the production process of tangerine marmalade. Product quality analysis results. Microoganisms results of tangerine Jam and tangerine Marmalade.
Evaluate the nutritional quality of the tangerine jam and the tangerine marmalade. DISCUSSION AND CONCLUSION. Survey on consumer tastes and preferences for tangerine jam and tangerine marmalade products. Improving procuction process for tangerine jam and tangerine marmalade.
Developing production process for tangerine jam products. Developing a production process for tangerine marmalade products. Quality assessment of jam and marmalade from tangerine. 63 viii LIST OF FIGURES Figure 1.
General process of producting tangerine jam. General processing of producting marmalade. Processing diagram of Tangerine Jam. Processing diagram of Tangerine Marmalade.
Results of a survey on consumer demand for fruit jam products in Thai Nguyen. The flow chart of the production process of tangerine jam 49 Figure 7. The flow chart of the production proces of tangerine marmalade. 53 1 LIST OF TABLES Table 1: Tangerines producing countries in the world.
Nutritional composition in 100g of tangerine juice. Research on the ratio of added sugar for the production of tangerine jam. Research on the ratio of added sugar for the production of tangerine marmalade. Study on the ratio of Cyclo Dextrin to the ability to reduce bitterness of tangerine marmalade.
Study on the ratio of Citric Acid added to tangerine jam. Study on the ratio of Citric Acid added to tangerine marmalade. Study on the ratio of pectin affecting the structure of tangerine jam. Study on the ratio of pectin affecting the structure of tangerine marmalade.
Study on the ratio of gelatine to the structure of tangerine jam. Product quality level according to sensory quality scores. Distribution of weight coefficients for sensory parameters 35 Table 13. Sensory scoring facility.
The effect of Gelatine ratio on the structure of tangerine jam. Effect of sugar ratio on sensory quality of tangerine marmalade. Effect of the ratio of Cyclo Dextrin on the anti-bitterness of tangerine marmalade. Effect of the ratio of Citric Acid on the ability to adjust taste.
Effect of pectin ratio on the structure of tangerine marmalade. Microorganisms in the product. Product quality analysis results. Research rationale In the world, the genus Citrus has about 20-25 species, distributed in East, South and Southeast Asia, Australia, the southwest Pacific islands, with many varieties growing throughout the country with a harmonious climate.
In Vietnam, the genus Citrus has 15 species, mostly grown, including tangerines. Tangerine is the general name only with a number of the same genus Citrus. Vietnam, South China and Japan are considered the birthplace of these tangerine tangerine varieties by people and found wild relatives in this area, as in China. Said has been cultivated for at least 3,000 years now and is widely cultivated to get results in many tropical to tropical regions.
The cultivation of tangerines produces an output of about 33 million, of which 6 countries have an output of 1 million tons or more (Table 1). Table 1: Tangerines producing countries in the world No Countries Fruit production in 2017 (million tons) 1 Egypt 1.4 FAO Vietnam is considered to be in the region of common tangerine (Citrus reticulata). Many varieties of traditional tangerines are widely planted such as tangerine tangerine, with large fruit, thin skin, citrus fruits, sweet water, sweet and fragrant, grown mainly in Bac Giang, Lang Son, Cao Bang, Thai Nguyen, .; 4 Tangerines with sugar, small fruit, thick skin, very sweet, are grown in Phu Tho, Tuyen Quang, Yen Bai, Hanoi, .; Tangerines, small fruits, thick and sour skin, are grown mainly in the mountains with an altitude of 800-1,600m in Lang Son, Ha Giang, Lai Chau,. There are many other varieties imported and planted in Tangerines such as pink tangerines, green tangerines, Thai tangerines,.
In Vietnam, tangerines are grown mainly for fruit, essential oil distillation and medicine. In Traditional Medicine, many parts are used differently such as: Ripe pods (Bare skin), peel of green pods (Serum), outer shell of fruit (Kumquat), Leaves (Quat), seeds (Quat ganglion). Tangerine peel (Tran derm) is a part widely used in traditional medicine in Vietnam, China,. The main ingredient of Tran vera is essential oil with the main ingredients D-limonene, and flavonide, including hesperidin, methylhesperidin, nobiletin, tangeretin,.
are the active ingredients of most interest in the dermis. In tangerine juice contains a lot of Vitamin C, it contains 36 mg of vitamin C in each fruit. Vitamin C is good for your hair, skin, immune system and weight balance, and it's also a great vitamin for your digestive system. Vitamin C helps regulate the intestines and improves the absorption of nutrients from other foods.
In addition, tangerines have only 35 calories in each fruit. They contain free fats and antioxidants, which can help slow down the aging process. Tangerine seeds have a bitter taste, calculated in average, in 2 canals and kidneys; has the function of gas, hemolysis, and system; used to treat intestinal prolapse, scrotal pain, inflammation of the mammary glands, back pain with a dose of 3-9g / day. Tangerine leaves have a spicy taste, bitterness, in the two canals and waste, the function of the first, gas, phlegm; used to treat chest pain; cough, breast swelling, intestinal prolapse at a dose of 10-20g/day.
Vietnamese tangerines are cheap and have a short harvest time.