Sodium alginate-chitosan hydrogel-based soft ionic artificial muscle with different moisture content

Ionics ◽  
2020 ◽  
Vol 26 (12) ◽  
pp. 6371-6378
Author(s):  
Haoyan Xu ◽  
Chuanlong Han ◽  
Sicheng Liu ◽  
Xin Hao ◽  
Yu Rao ◽  
...  
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Artificial Muscle ◽  
Chitosan Hydrogel

scholarly journals Influence of sodium alginate on the formation of the structure of the products from chopped and minced meat

2021 ◽  
Vol 30 ◽  
pp. 01023
Author(s):  
Anna Vasyukova ◽  
Marina Kononenko ◽  
Alexander Moshkin ◽  
Maxim Vasyukov ◽  
Anatoly Kushnarenko ◽  
...  
Keyword(s):  
Moisture Content ◽  
Mathematical Models ◽  
Sodium Alginate ◽  
Design Method ◽  
Meat Products ◽  
Optimal Ratio ◽  
Optimal Values ◽  
Minced Meat ◽  
Natural Additive

The paper presents the results of using algae as a natural additive to chopped semi-finished meat products. The optimal ratio is set by means of the design method and the results of organoleptic assessment. The mathematical models that help to determine the optimal values of the factors and C, W and T (concentration of the components, moisture content and duration of mincing) are obtained.

scholarly journals Controlling the Skin Barrier Quality through the Application of Polymeric Films Containing Microspheres with Encapsulated Plant Extract

Processes ◽  
2020 ◽  
Vol 8 (5) ◽  
pp. 530
Author(s):  
Justyna Kozlowska ◽  
Bartosz Tylkowski ◽  
Natalia Stachowiak ◽  
Weronika Prus-Walendziak
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Skin Color ◽  
Skin Barrier ◽  
Transepidermal Water Loss ◽  
The Body ◽  
Polymeric Films ◽  
Calendula Officinalis ◽  
Gelatin Microspheres ◽  
Flower Extract

Human skin has protective functions and it is a barrier that protects the interior of the body from harmful environmental factors and pathogen penetration. An important role of the skin is also to prevent the loss of water from the body and if the skin barrier is damaged, the amount of water emitted from the internal environment is increased. Therefore, it is crucial to recovery and maintenance of epidermal barrier integrity. The aim of the current work was to encapsulate Calendula officinalis flower extract in gelatin microspheres and then incorporation microspheres into thin polymeric films made from sodium alginate or mixture of sodium alginate and starch. Such materials may find applications in the cosmetic field for example in the preparation of masks for skin, according to the Calendula officinalis flower extract wide influence on skin condition. Thus, the release profile of this extract from the materials was tested under conditions corresponding to the skin (pH 5.4, 37 °C). The mechanical properties, surface free energy, and moisture content of obtained films were measured. To determine the barrier quality of the stratum corneum, transepidermal water loss (TEWL) and skin color measurements were performed. The loaded microspheres were successfully incorporated into polymeric films without affecting its useful properties. Although the values of Young’s modulus and the moisture content were decreased after film modification by microspheres addition, the skin parameters were much better after application of films with microspheres. The results confirmed that obtained materials can be potentially used in cosmetics to improve the skin barrier quality.

Polypyrrol/chitosan hydrogel hybrid microfiber as sensing artificial muscle

2011 ◽  
Author(s):  
Yahya A. Ismail ◽  
Jose G. Martínez ◽  
Ahmad S. Al Harrasi ◽  
Seon J. Kim ◽  
Toribio F. Fernández Otero
Keyword(s):  
Artificial Muscle ◽  
Chitosan Hydrogel

scholarly journals Acid and calcium alginate extraction method affected the quality of alginate from brown seaweed Sargasum hystrix J. Agardh

2018 ◽  
Vol 21 (3) ◽  
pp. 532
Author(s):  
Ivana M. Diharningrum ◽  
Amir Husni
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Extraction Method ◽  
Calcium Alginate ◽  
Functional Group ◽  
Brown Seaweed ◽  
Extraction Methods ◽  
Ash Content ◽  
Alginate Extraction

Seaweed is one of the marine biological resources of Indonesia that has a high potential to produce alginate, however, the most appropiate method to extract the alginate of high quality is still unknown. This study was aimed to determine the effects of extraction methods on the quality of alginate from seaweed Sargassum hystrix and compared the extraction cost. Two extraction methods were used in this study including acidic and calcium method. The yield, moisture content, viscosity, pH, whiteness degree, functional group, ash content and extraction cost were evaluated. The viscosity and whiteness degree of sodium alginate from acidic method was 126.00±7.21 cPs and 75.27±0.58 cPs, respectively. Meanwhile the calcium method produced sodium alginate with viscosity 7.23±1.50 cPs and whiteness degree 68.95±0.18 cPs. The yield, moisture content, and ash content of alginate produced by acidic method were lower compare to that of produced by calcium method. Cost analysis showed the acidic method required higher cost. Nevertheless, these resultssuggest that acidic method produce alginate with better quality than the calcium method.

Investigation into the output force tremor characteristics of bionic artificial muscle based on sodium alginate

2018 ◽  
Vol 5 (11) ◽  
pp. 115701
Author(s):  
Gang Zhao ◽  
Zhijie Wang ◽  
Honghao Zhao ◽  
Junjie Yang
Keyword(s):  
Sodium Alginate ◽  
Artificial Muscle ◽  
Force Tremor ◽  
Output Force

scholarly journals The Characteristics of Sodium Alginate from Brown Seaweed Sargassum crassifolium with Different Filtering Tools

2017 ◽  
Vol 20 (2) ◽  
pp. 351 ◽  
Author(s):  
Ellya Sinurat ◽  
Retni Marliani
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Brown Seaweed ◽  
Gel Strength ◽  
Filter Press ◽  
Average Yield ◽  
The World ◽  
Filtration Stage ◽  
Alginate Extraction

Indonesia is the largest producer of seaweed in the world, one of the potential marine biological resources is the brown seaweed (Sargassum crassifolium) known as an alginate producer. Alginate extraction through demineralization stage, neutralization, extraction, filtration, precipitation and bleaching. Filtration stage is a very influential process on the quality of alginate produced. In this research, filtering using different tools screen vibrator and hydraulic filter press was conducted to characterize Na-alginate seaweed Sargassum crassifolium using both filter tools. Quality of sodium alginate (yield, viscosity, gel strength, syneresis, whiteness, moisture content, ash, and pH) was determined. The result showed that the viscosity, gel strength, syneresis, and whiteness of alginate obtained using filter press showed the best result. The yield of sodium alginate produced by filter press was 10.91±4.33%, with characteristics of viscosity 82.66±112.46 cP, gel strength 353.54±184.51 g/cm2, syneresis 2.99±0.55%, whiteness 60.53±9.09%, moisture content 13.31±0.77%, ash 26.69±0.82% and pH 6.05±0.57.  Based on a parameter of alginate (yield, moisture content, ash, and pH) showed that vibrator method produced alginate with better characteristics. The sodium alginate produced has average yield 19.22±5.68%, viscosity 57.5±21.79 cP, whiteness 29.7±4.45%, gel strength 327.63±55.15 g/cm2, syneresis 4.34±0.78%, moisture content 10.23±1.68%, ash 24.94±4.41% and pH 7.03± 2.60. Operationally the filter press was more effective and efficient in filtering to result from Na-alginate compared to the screen vibrator.

scholarly journals Optimization of Extraction Temperature on The Quality of Alginate from Seaweed Sargassum muticum

2019 ◽  
Vol 22 (1) ◽  
pp. 164
Author(s):  
Rizqi Wahyu Herdianto ◽  
Amir Husni
Keyword(s):  
Moisture Content ◽  
Sodium Alginate ◽  
Ash Content ◽  
Sargassum Muticum ◽  
Extraction Temperature ◽  
Food Industries ◽  
The Difference ◽  
Effect On Yield ◽  
Alginate Extraction

Seaweed is one of Indonesia’s marine biological resources which has potential to produce alginate which can be used for food and non-food industries. Several studies had been carried out in an effort to improve the quality of alginate extraction. This study aims to determine the effect of extraction temperature on the quality of sodium alginate from Sargassum muticum. This study used variations in extraction temperatures, namely 30; 40; 50; 60 and 70°C. The parameters observed included yield (%), moisture content (%), ash content (%), pH, whiteness degree and functional groups of alginate. The results showed that the difference in extraction<br />temperature of sodium alginate had a significant effect on yield and viscosity, but did not significantly affect water content, ash content, and whiteness degree. Extraction temperature of 60°C produced the best yield<br />and viscosity, 14.90±2.26% and 236.10±36.61 cPs, respectively.

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