Formulation and physical evaluation of facial cream preparations from Ceremai fruit juice (Phyllanthus acidus (l.) Skeels)

Introduction: Ceremai (Phyllanthus acidus (L.) Skeels) fruit contains AHA (Alpha Hydroxy Acids) compounds which are widely used as a moisturizer or as an exfoliating process in cosmetics production. It also contains vitamin C and flavonoids, both of which acts as whitening agents. Aim: This study aims to utilise a source of natural AHA active substances found in P.acidus in face cream preparations. Methods: The juice from P.acidus was dried by freeze-drying method and formulated into a cream with the preparation process evaluated for one month. Results: The observation results showed that after one month, there was no change in colour during storage, with the pH, viscosity and spreadability of the cream in the range 4.5-6.2, 2700-3996 cps, and 4.8-5.7 cm, respectively. Conclusion: P.acidus fruit juice containing AHA can be formulated into a face cream with good physical stability.

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Effect of drying methods on the texture properties and active ingredients in Longan flesh

E3S Web of Conferences ◽

10.1051/e3sconf/202125102049 ◽

2021 ◽

Vol 251 ◽

pp. 02049

Author(s):

Li Qian ◽

Lv Yongbin ◽

Su Keying ◽

Luo Simei ◽

Zhao Shiming ◽

...

Keyword(s):

Vitamin C ◽

Freeze Drying ◽

Microwave Drying ◽

Drying Methods ◽

Drying Method ◽

Active Ingredients ◽

Texture Properties ◽

Texture Characteristics ◽

Active Substances

In order to determine the best drying method of longan flesh, the effects of different drying method (microwave drying, blast drying,vacuum freeze-drying) on the texture characteristics and active ingredients were compared. The results show that different drying methods will increase the hardness, cohesion and chewiness of longan flesh, and decrease the viscosity and elasticity to varying degrees. For active substances, the content of flavonoids and polyphenols is the largest under vacuum freeze-drying, followed by microwave drying and blast drying, but the loss of vitamin C is the opposite. On the whole, vacuum freeze-drying does not cause shrinkage of the flesh, and maintains good hardness, cohesion, chewiness and active ingredients. Comprehensive texture characteristics and changes in active ingredients, vacuum freeze drying is more suitable for drying and processing longan flesh.

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Effects of drying method and excipient on the structure and physical stability of protein solids: Freeze drying vs. spray freeze drying

International Journal of Pharmaceutics ◽

10.1016/j.ijpharm.2020.120169 ◽

2021 ◽

Vol 594 ◽

pp. 120169

Author(s):

Tarun Tejasvi Mutukuri ◽

Nathan E. Wilson ◽

Lynne S. Taylor ◽

Elizabeth M. Topp ◽

Qi Tony Zhou

Keyword(s):

Freeze Drying ◽

Physical Stability ◽

Drying Method ◽

Spray Freeze Drying

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Evaluation of Innovative Dried Purée from Jerusalem Artichoke—In Vitro Studies of Its Physicochemical and Health-Promoting Properties

Molecules ◽

10.3390/molecules26092644 ◽

2021 ◽

Vol 26 (9) ◽

pp. 2644

Author(s):

Jan Oszmiański ◽

Sabina Lachowicz ◽

Paulina Nowicka ◽

Paweł Rubiński ◽

Tomasz Cebulak

Keyword(s):

Freeze Drying ◽

Jerusalem Artichoke ◽

Polyphenolic Compounds ◽

Raw Material ◽

Vacuum Drying ◽

Drying Methods ◽

Drying Method ◽

Activity Inhibition ◽

Health Promoting

The present study aimed to evaluate the effect of Jerusalem artichoke processing methods and drying methods (freeze drying, sublimation drying, vacuum drying) on the basic physicochemical parameters, profiles and contents of sugars and polyphenolic compounds, and health-promoting properties (antioxidant activity, inhibition of the activities of α-amylase, α-glucosidase, and pancreatic lipase) of the produced purée. A total of 25 polyphenolic compounds belonging to hydroxycinnamic phenolic acids (LC-PDA-MS-QTof) were detected in Jerusalem artichoke purée. Their average content in the raw material was at 820 mg/100 g dm (UPLC-PDA-FL) and was 2.7 times higher than in the cooked material. The chemical composition and the health-promoting value of the purées were affected by the drying method, with the most beneficial values of the evaluated parameters obtained upon freeze drying. Vacuum drying could offer an alternative to freeze drying, as both methods ensured relatively comparable values of the assessed parameters.

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Environmentally Friendly and Multifunctional Shaddock Peel-Based Carbon Aerogel for Thermal-Insulation and Microwave Absorption

Nano-Micro Letters ◽

10.1007/s40820-021-00635-1 ◽

2021 ◽

Vol 13 (1) ◽

Author(s):

Weihua Gu ◽

Jiaqi Sheng ◽

Qianqian Huang ◽

Gehuan Wang ◽

Jiabin Chen ◽

...

Keyword(s):

Microwave Absorption ◽

Thermal Insulation ◽

Freeze Drying ◽

Thermal Infrared ◽

Carbon Aerogel ◽

Carbon Aerogels ◽

List Type ◽

Drying Method ◽

Cross Sectional ◽

Compression Resistance

Highlights The eco-friendly shaddock peel-derived carbon aerogels were prepared by a freeze-drying method. Multiple functions such as thermal insulation, compression resistance and microwave absorption can be integrated into one material-carbon aerogel. Novel computer simulation technology strategy was selected to simulate significant radar cross-sectional reduction values under real far field condition. . Abstract Eco-friendly electromagnetic wave absorbing materials with excellent thermal infrared stealth property, heat-insulating ability and compression resistance are highly attractive in practical applications. Meeting the aforesaid requirements simultaneously is a formidable challenge. Herein, ultra-light carbon aerogels were fabricated via fresh shaddock peel by facile freeze-drying method and calcination process, forming porous network architecture. With the heating platform temperature of 70 °C, the upper surface temperatures of the as-prepared carbon aerogel present a slow upward trend. The color of the sample surface in thermal infrared images is similar to that of the surroundings. With the maximum compressive stress of 2.435 kPa, the carbon aerogels can provide favorable endurance. The shaddock peel-based carbon aerogels possess the minimum reflection loss value (RLmin) of − 29.50 dB in X band. Meanwhile, the effective absorption bandwidth covers 5.80 GHz at a relatively thin thickness of only 1.7 mm. With the detection theta of 0°, the maximum radar cross-sectional (RCS) reduction values of 16.28 dB m2 can be achieved. Theoretical simulations of RCS have aroused extensive interest owing to their ingenious design and time-saving feature. This work paves the way for preparing multi-functional microwave absorbers derived from biomass raw materials under the guidance of RCS simulations.

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Preparation of LiFePO4 Powders by Ultrasonic Spray Drying Method and Their Memory Effect

Materials ◽

10.3390/ma14123193 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3193

Author(s):

Tu Lan ◽

Xiaolong Guo ◽

De Li ◽

Yong Chen

Keyword(s):

Spray Drying ◽

Memory Effect ◽

Electrode Materials ◽

Average Particle Size ◽

Lithium Ion ◽

Average Particle ◽

Preparation Process ◽

Drying Method ◽

Drying Temperature ◽

Ultrasonic Spray

The memory effect of lithium-ion batteries (LIBs) was first discovered in LiFePO4, but its origin and dependence are still not clear, which is essential for regulating the memory effect. In this paper, a home-made spray drying device was used to successfully synthesize LiFePO4 with an average particle size of about 1 μm, and we studied the influence of spray drying temperature on the memory effect of LiFePO4 in LIBs. The results showed that the increasing of spray drying temperature made the memory effect of LiFePO4 strengthen from 1.3 mV to 2.9 mV, while the capacity decreased by approximately 6%. The XRD refinement and FTIR spectra indicate that the enhancement of memory effect can be attributed to the increment of Li–Fe dislocations. This work reveals the dependence of memory effect of LiFePO4 on spray drying temperature, which will guide us to optimize the preparation process of electrode materials and improve the management system of LIBs.

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Preparation of calcium hexaluminate porous ceramics by novel pectin based gelcasting freeze-drying method

Ceramics International ◽

10.1016/j.ceramint.2020.12.024 ◽

2020 ◽

Author(s):

Lei Yuan ◽

Endong Jin ◽

Chaoyue Li ◽

Zhenli Liu ◽

Chen Tian ◽

...

Keyword(s):

Freeze Drying ◽

Porous Ceramics ◽

Drying Method ◽

Calcium Hexaluminate

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Biocompatibility and osteoconductivity of scaffold porous composite collagen–hydroxyapatite based coral for bone regeneration

Open Chemistry ◽

10.1515/chem-2020-0080 ◽

2020 ◽

Vol 18 (1) ◽

pp. 584-590 ◽

Cited By ~ 1

Author(s):

◽

Dyah Hikmawati ◽

Umi Kulsum ◽

Djony Izak Rudyardjo ◽

Retna Apsari ◽

...

Keyword(s):

Bone Regeneration ◽

Freeze Drying ◽

Bone Growth ◽

Viable Cell ◽

Drying Method ◽

Porous Composite ◽

Viable Cells

AbstractThe synthesis of collagen–hydroxyapatite composites has been carried out, and the biocompatibility and osteoconductivity properties have been tested. This research was conducted to determine the ability of hydroxyapatite–collagen composites to support the bone growth through the graft surface. Hydroxyapatite used in this study was synthesized from coral with a purity of 96.6%, while collagen was extracted from the chicken claw. The process of forming a scaffold of collagen–hydroxyapatite composites was carried out using the freeze-drying method at −80°C for 4 h. The biocompatibility characteristics of the sample through the cytotoxicity tests showed that the percentage of viable cells in collagen–hydroxyapatite biocomposite was 108.2%, which is higher than the percentage of viable cells of hydroxyapatite or collagen material. When the viable cell is above 100%, collagen–hydroxyapatite composites have excellent osteoconductivity as a material for bone regeneration.

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Construction of a CsPbBr3 modified porous g-C3N4 photocatalyst for effective reduction of CO2 and mechanism exploration

New Journal of Chemistry ◽

10.1039/d0nj04018e ◽

2021 ◽

Author(s):

Yunqi Wang ◽

Zhixiang Liu ◽

Xu Tang ◽

Pengwei Huo ◽

Zhi Zhu ◽

...

Keyword(s):

High Temperature ◽

Porous Structure ◽

Freeze Drying ◽

Drying Method ◽

Full Spectrum ◽

Effective Reduction ◽

Reduction Of Co2 ◽

High Temperature Calcination

A P-CN/CsPbBr3 photocatalyst with a lamellar porous structure was prepared by a high temperature calcination and freeze drying method, and it exhibited superior CO2 reduction performance under the conditions of full spectrum irradiation.

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