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Effect of various factors on extraction efficiency of total anthocyanins from Butterfly pea (Clitoria ternatea L. Flowers) in Southern Vietnam

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IOP Conference Series: Materials Science and engineering 2019年第1期544卷

作者： Tri Nhut Pham Tri Duc Lam Minh Tien Nguyen Xuan Tien Le Dai-Viet N. Vo Tran Quoc Toan Thanh Sang Vo NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City Vietnam Faculty of Chemical Engineering and Food Technology Nguyen Tat Thanh University Ho Chi Minh City Vietnam Graduate School of Biotechnology Kyung Hee University South Korea Department of Chemical Engineering HCMC University of Technology VNU-HCM Ho Chi Minh City Vietnam Faculty of Chemical and Natural Resources Engineering Universiti Malaysia Pahang Malaysia Institute of Natural Products Chemistry Vietnam Academy of Science and Technology Ha Noi Vietnam

Nowadays, anthocyanins have become an interesting topic of much scientific research and act as potential sources of eco-friendly natural food dyes and their helpful effects on human health.. The purpose of the present article was to apply conventional extraction methods of pigments from Butterfly pea (Clitoria ternatea ***) in Southern Vietnam were tested to extract anthocyanins. The effects of various factors, including the solvent concentration, extraction time, temperature, and solvent/material ratio on the extraction total anthocyanins from Butterfly pea were investigated. In this study, the concentration of monomeric anthocyanins was completed by the spectrophotometry pH differential *** highest recovered anthocyanin level was achieved with 50 % ethanol (143.49 mg/L), while the lowest one was obtained with water (90.9 mg/L). The extraction yield was significantly affected by temperature and the excellent condition was 60°C. The extraction yield raised with increasing of solvent/material ratio until equilibrium has arrived at the optimal ratio of 25:1 (mL/g). The extraction yield increased first and then decreased with an extension in time values.

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Effects of temporal frequency towards visual roughness perception by drifted grating stimulation

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Journal of Physics: Conference Series 2019年第1期1367卷

作者： M U Syafiq S Sadiah A Z Shaameri F M Sakri M A Azizan M F Haniff School of Electrical Engineering University of Technology Malaysia 81310 Skudai Johor Malaysia Electrical Electronics and Automation Section Universiti Kuala Lumpur Malaysia Spanish Institute (UniKL MSI) Kulim Hi-Tech Park 09000 Kulim Kedah Malaysia Department of Aerospace Universiti Kuala Lumpur Malaysia Institute of Aviation Technology (UniKL MIAT) Jalan Jenderam Hulu Kampung Jenderam Hulu 43900 Sepang Selangor Malaysia Quality Engineering Section Universiti Kuala Lumpur Malaysian Institute of Industrial Technology (UniKL MITEC) Bandar Seri Alam 81750 Masai Johor Malaysia

Previous studies proved that in addition to spatial characteristics function in extracting roughness information, there is potential roughness dependability across changes in the temporal mechanisms of textured surfaces. In the present study, we created temporal coding mechanism by converting fine spatial structure surface into a temporal drifting pattern. We proposed that regular spatial structure of gratings with variation of temporal mechanism have different influence toward roughness perception. Results showed massive individual differences of roughness perception between subjects, suggesting that a combination of spatial and temporal mechanisms accounts for perceptual judgments of roughness. We suggest that visual roughness judgment was determined by spatial in grating stimulation, and improvement is needed in spatial components before temporal coding of visual roughness can be declared.

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Study on the formula to produce shampoo derived from Lemongrass (Cymbopogon citratus (D.C.) Stapf.) essential oil

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IOP Conference Series: Materials Science and engineering 2020年第1期959卷

作者： T T hien P T Nhut L G Bach N P T Nhan L T H Nhan Department of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City 700000 Vietnam Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District Ho Chi Minh City 700000 Vietnam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam Center of Excellence for Biochemistry and Natural Products Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam

Facing the proliferation of unnatural fragrance personal care products by their convenience and affordability. However, facing the immediate benefits is the insecurity of prolonged exposure to odors, the vast majority of which may exceed the allowable or unknown uses. Therefore, we research the production process of shampoos derived from natural essential oils. In this study, we use lemongrass oil originating from Tan Phu Dong commune, Tien Giang province to conduct steam distillation with optimum efficiency of 0.29%. The general formula for making a shampoo product is based on basic factors such as detergent, humectant, foaming agent, etc. The product evaluation is based on the results of the assessment of foaming ability, degree foam stability, and product stability under different storage conditions. Results showed that shampoo products derived from lemongrass oil gave good evaluation results, scalable, and developed to conduct commercialization.

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Application of coconut oil from Ben Tre Province (Vietnam) as the main detergent for body wash products

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IOP Conference Series: Materials Science and engineering 2020年第1期959卷

作者： T T K Ngan T T hien N T C Quyen P N Q Anh L T H Nhan M H Cang D D Nhat N D Phuc L G Bach Center of Excellence for Biochemistry and Natural Products Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam Department of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) Ho Chi Minh City 700000 Vietnam Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District Ho Chi Minh City 700000 Vietnam Department of Chemical Engineering & Processing Nong Lam University Ho Chi Minh City Vietnam Falcuty of Food and Environmental Engineering Nguyen Tat Thanh University Ho Chi Minh City 70000 Viet Nam

Coconut oil is considered the active ingredient as a moisturizer used by many people in tropical regions. At the same time, coconut oil can improve the symptoms of skin disorders by moisturizing and soothing the skin. A body washes formula that contains coconut oil based on the saponification process is formulated through an appropriate content survey. The combination of auxiliary substances such as detergent, foaming agent, moisturizing agent, preservative was also conducted to evaluate different concentrations. Products are assessed and visually observed for appearance, viscosity, pH value, stability, and durability when stored. The body wash formula was found to be white and pearl luster was visually observed. Products using 20% crude soap content, 5% detergent (SLES), 3% glycerin, etc. have all been tested to show good physico-chemical properties in terms of pH value and viscosity, as well as no irritation, upon skin contact. Research shows that coconut oil body wash formulas with good physico-chemical properties can be developed into new body wash cosmetic products.

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Development and evaluation of shampoo products based on coconut oil source from Ben Tre Province (Vietnam)

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IOP Conference Series: Materials Science and engineering 2020年第1期959卷

作者： T T K Ngan T T hien L T H Nhan M H Cang P H Danh N D Phuc L G Bach Center of Excellence for Biochemistry and Natural Products Nguyen Tat Thanh University Ho Chi Minh City Vietnam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City Vietnam Department of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) Ho Chi Minh City 700000 Vietnam Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District Ho Chi Minh City 700000 Vietnam Department of Chemical Engineering & Processing Nong Lam University Ho Chi Minh City Vietnam Falcuty of Food and Environmental Engineering Nguyen Tat Thanh University Ho Chi Minh City 70000 Viet Nam

In order to enhance the use of coconut oil through its application in personal care products, shampoos formulated with simple soap act as the leading detergent with a 20% content and ingredients other commercial components such as Sodium Lauryl Ether Sulfate, Plantacare 2000, Glycerin, Cocamidopropyl Betaine, etc. A combination of 20% crude soap and a synthetic active substance synthesizing sodium lauryl ether sulfate (SLES) 5% make up the excellent shampoo recipe with cleansing feature. Ingredients of complementary detergents, moisturizers, and smoothing softeners are supplemented with appropriate levels to improve raw soap's disadvantages. Foamability and foam durability are selected targets to examine the influence of ingredients in the formula. The sensory elements of the product reach the set goals with an average evaluation score of about 4/5. Thereby, shampoo products penetrate the cosmetic market and attract many consumers in the future.

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Cover Picture: Recent Advances in the Optimization of Organic Light‐Emitting Diodes with Metal‐Containing Nanomaterials (Chem. Rec. 8/2019)

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The Chemical Record 2019年第8期19卷

作者： Hong Lian Jiahao Shen Hongen Guo Xiaozhe Cheng Qingchen Dong Jianhai Yang Wai‐Yeung Wong MOE Key Laboratory of Interface Science and Engineering in Advanced Materials and Research Center of Advanced Materials Science and Technology Taiyuan University of Technology 79 Yingze West Street Taiyuan 030024 P. R. China Xi'an Research Institute of Hi-Tech Xi'an 710025 China Department of Applied Biology and Chemical Technology The Hong Kong Polytechnic University Hung Hom Hong Kong China

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Preliminary study to investigate cellulose biodegradability of Bacillus - Aspergillus and Neurospora Crassa on cassava peels (Manihot Esculenta)

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IOP Conference Series: Materials Science and engineering 2020年第1期991卷

作者： T Tran H H Loc N T V Ha L V Tan D A Le L T A Hong NTT Hi-Tech Institute Nguyen Tat Thanh University 300A Nguyen Tat Thanh Ward 13 District 4 HCMC 70000 Viet Nam. Faculty of Food and Environmental Engineering 331 QL1A An Phu Dong Ward District 12 HCMC 70000 Viet Nam Faculty of Environmental Ho Chi Minh City University of Natural Resources and Environment. 236B Le Van Sy Street Ward 1 Tan Binh HCMC 70000 Viet Nam. Department of Science and Technology of Ben Tre Province 280 Street 3/2 Ward 3 Ben Tre. 86000 Viet Nam. Bioconversion technology Institute of Tropical Biology Vietnam Academy of Science and Technology 9/621 Hanoi Highway Linh Trung Ward Thu Duc District HCMC Viet Nam.

Cassava peel holds an abundance of nutrients that could be utilized as fertilizer in agriculture. However, high cellulose contents make it hard for organic digestion, thus slow down the absorption for plants. In this study, we investigate microorganisms for effective cellulose degradation of cassava peel waste collected directly from Hung Duy Tapioca Starch Factory in Tay Ninh Province, Viet Nam. Experiments evaluate the decrease of mass cassava peel of the two groups of Bacillus - Aspergillus and positive control strains such as Neurospora Crassa. The sample was tested on Czapek - Dox liquid culture medium, a method of assessing the dry mass difference of samples used to assess biodegradability in 28 days. Besides, tests to assess the production of products and environmental parameters such as glucose and pH were recorded. Initial results showed that the combination of Bacillus and Aspergillus provides the highest glucose concentration, reached 16.52 mg/ml and digests 53% of the cassava mass compared with a combination of Neurospora Crassa reached 11.45 mg/ml and 46% of the cassava mass. Comparison results also showed that the action potential of microorganisms was stronger when combined and provided evidence that the formation of combinations of microorganisms would work well in probiotics, which brings better environmental treatment efficiency.

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Formulation of the Lemongrass (Cymbopogon citratus) essential oil-based eco-friendly diffuse solution

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IOP Conference Series: Materials Science and engineering 2020年第1期959卷

作者： T T K Ngan T T hien P H Danh L T H Nhan L X Tien Center of Excellence for Biochemistry and Natural Products Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City 700000 Vietnam Falcuty of Food and Environmental Engineering Nguyen Tat Thanh University Ho Chi Minh City 70000 Viet Nam Department of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet Street District 10 Ho Chi Minh City 700000 Vietnam Vietnam National University Ho Chi Minh City Linh Trung Ward Thu Duc District Ho Chi Minh City 700000 Vietnam

One of the most challenging issues associated with the use of artificial scent is the harmful effects not always visible to the eyes. To meet the growing consumer demand for the natural active ingredients of household products, the team looked for new, rich ingredients that have ample amount of compound that create scents and exhibit high antibacterial activities. The main objective of this study was to formulate a diffused product by replacing the harmful synthetic ingredients with safe natural ingredients. After applying the hydrodistillation method for the extraction process, lemongrass essential oil obtained with optimum efficiency of 0.29%. The process and formula of diffused products are optimized through the process of influencing parameters such as platform oil, emulsifier, solvent, Tween 80 and essential oil. The results indicate that lemongrass essential oil can be used as an eco-friendly alternative, which can add up the aromatic and deodorizing properties to the synthesized fragrance. The research into the application of lemongrass essential oils in many products will provide insight into the potential development of essential oils in the field of home care products.

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Extraction of anthocyanins from Butterfly pea (Clitoria ternatea L. Flowers) in Southern Vietnam: Response surface modeling for optimization of the operation conditions

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IOP Conference Series: Materials Science and engineering 2019年第1期542卷

作者： Tri Nhut Pham Duy Chinh Nguyen Tri Duc Lam Pham Van Thinh Xuan Tien Le Dai Viet Vo Nguyen hieu Vu Quang Trinh Duy Nguyen Long Giang Bach NTT Hi-Tech Institute Nguyen Tat Thanh University Ho Chi Minh City Vietnam Faculty of Chemical Engineering and Food Technology Nguyen Tat Thanh University Ho Chi Minh City Vietnam Dong Nai Technology University Bien Hoa City Dong Nai Province Vietnam Department of Chemical Engineering HCMC University of Technology VNU-HCM Ho Chi Minh City Vietnam Faculty of Chemical and Natural Resources Engineering Universiti Malaysia Pahang Malaysia Department of Imaging System Engineering Pukyong National University Busan South Korea Department of Chemical Engineering Pukyong National University Busan South Korea

In this paper, the Response Surface Methodology (RSM), in conjunction with Central Composite Design (CCD), was used to optimize the extraction of anthocyanins from Butterfly pea (Clitoria ternatea ***) cultivated in Southern Vietnam. The effect of extraction temperatures of solvent ethanol (50-70 °C), duration of extraction (40-50 min) and solid-liquid ratios (20:1–30:1) was measured as independent variables on the total extraction anthocyanins in the response function. The highest anthocyanin content of 132.756 mg/L of butterfly pea anthocyanin was collected at the solid liquid ratio of 23:1, extraction time of 46 min, and temperature 60.6°C. Butterfly pea anthocyanins yield detailed significant correlation with high F values, low P values (<0.0001), and desirable determination coefficient (R2 = 0.9994).

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Erratum to “Fracture strength and microstructural study of ultrathin Si die with Cu backside layer diced with picosecond laser” [Mater. Sci. Eng. A 759, 24 June 2019, 785–796]

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Materials Science and engineering: A 2019年 761卷

作者： Michael Raj Marks Kuan Yew Cheong Zainuriah Hassan Infineon Technologies (Kulim) Sdn. Bhd. Kulim Hi-Tech Park 09000 Kulim Kedah Malaysia Electronic Materials Research Group School of Materials & Mineral Resources Engineering Universiti Sains Malaysia 14300 Nibong Tebal Penang Malaysia Institute of Nano Optoelectronics Research and Technology (INOR) Universiti Sains Malaysia 11800 Penang Malaysia

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