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

Diharningrum, Ivana M.; Husni, Amir

doi:10.17844/jphpi.v21i3.24737

Cited by 7 publications

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“…at 60 0 in the oven and pulverized. 17 The extracted sodium alginate was tested using an Fourier Transform InfraRed (FTIR) spectrophotometer to show the absorption peak. Powdered sodium alginate samples were inserted into the plate and analysed.…”

Section: Methodsmentioning

confidence: 99%

The value of imbibition and syneresis for dental impression on red seaweed: a laboratory experiment

Indahyani,

Barid,

Anggraeni

2024

Padjadjaran J Dent

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Introduction: Alginate is a type of elastic dental impression, which is an irreversible hydrocolloid. The main components in sodium alginate can be obtained naturally through the extraction process from seaweed (Kappaphycus alvarezii). Several physical characteristics must be fulfilled by dental impressions, such as dimensional stability related to imbibition and syneresis. ANSI/ADA specification No.18 regarding the maximum permitted change in alginate impression materials may not exceed 0.5%. This research aimed to analyze the value of imbibition and syneresis on dental impressions of red seaweed extract (K.alvarezii). Methods: The research was conducted using an experimental laboratory method with a post-test-only control group design. There were two groups, namely the control group of commercial dental impressions and the treatment group using dental impressions with the sodium alginate extracted from red seaweed (K.Alvarezii) by the acid method, and the FTIR test was performed to analyze compound sodium alginate. Imbibition and syneresis measurements were carried out using a calliper on a plaster cast model from negative mould casting results, where previously, the mould was soaked in water for imbibition and evaporated for syneresis. Results: Imbibition and syneresis tests showed that the impression material group with sodium alginate from red algae was significantly lower than those with commercial impression materials. It was concluded that the impression material with sodium alginate from red seaweed had an effect on reducing the percentage of syneresis (p≤0.05) and imbibition (p≤0.05) of the impression material. Based on the results of our research, it was found that the alginate impression material extracted from red seaweed (k.alvarezii) had an imbibition value of 0.33% (p≤0.05) and syneresis of 0.28%, (p≤0.05) lower compared to alginate impression materials. commercial alginate impression material. Conclusion: The imbibition and syneresis values of red seaweed alginate show an excessively low value compared to commercial alginates. KEYWORDS dental impression,sodium alginate, Kappaphycus alvarezii, imbibition, syneresis

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Section: Methodsmentioning

confidence: 99%

The value of imbibition and syneresis for dental impression on red seaweed: a laboratory experiment

Indahyani,

Barid,

Anggraeni

2024

Padjadjaran J Dent

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“…Beberapa metode ekstraksi alginat telah dikembangkan diantaranya jalur kalsium alginat dan jalur asam alginat. Metode asam alginat menghasilkan alginat yang memiliki kualitas yang lebih baik dari Ca-alginat (Diharningrum and Husni, 2018). Kekuatan gel yang dihasilkan dari jalur asam alginat lebih tinggi dibandingkan dengan jalur kalsium alginat disebabkan karena kemurnian natrium alginat yang diekstraksi dengan jalur asam alginat lebih tinggi (Husni et al, 2012).…”

Section: Alchemy Jurnal Penelitian Kimiaunclassified

Membran Alginat Padina sp. - Polietilen Glikol (AP-PEG): Preparasi, Karakterisasi dan Aplikasinya sebagai Enkapsulan

et al. 2021

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Pengembangan penelitian tentang material berbasiskan sumber daya alam lokal dan dapat diperbaharui terus dikembangkan akhir-akhir ini. Hal tersebut didasari adanya kebutuhan material baru dengan karakteristik yang lebih menguntungkan dan dapat digunakan pada aplikasi yang spesifik. Penelitian ini bertujuan untuk mempelajari preparasi membran alginat-polietilen glikol (AP-PEG) dan aplikasinya sebagai enkapsulan. Alginat yang digunakan adalah hasil ekstraksi dari rumput laut cokelat Padina sp. Dengan metode maserasi jalur asam alginat. Preparasi membrane alginat Padina sp.-polietilen glikol (AP-PEG) dilakukan dengan perbandingan PEG-AP = 1:5; 1:10; 1:15; 0:1 (b/b). Analisis gugus fungsi terhadap seluruh membran yang dihasilkan, menunjukkan bahwa membran AP-PEG yang dihasilkan diprediksi sebagai hasil blending secara fisika karena tidak ada gugus fungsi baru yang terbentuk. Membran dengan perbandingan berat PEG-AP=1:15 memiliki karakteristik terbaik dengan persentase swelling sebesar 1465,5%, stress sebesar 14,588 MPa, strain 0,07 dan Modulus Young sebesar 193,13 MPa. Hasil analisis morfologi menunjukkan bahwa banyak rongga ditemukan pada membrane tersebut. Hasil uji disolusi terhadap membrane tersebut menunjukkan bahwa, pada pH 1,2 membran tersebut dapat melepaskan vitamin C sebesar 78,12% selama 60 menit dan tidak mengalami cracking. Di sisi lain, pada pH 7,2 membran tersebut dapat melepaskan vitamin C sebesar 83,54% dan cracking terjadi dalam waktu 12 menit. Hasil penelitian ini menunjukkan bahwa komposit AP-PEG dapat dibuat dari rumput laut coklat dan memiliki kemampuan sebagai enkapsulan. Alginate Padina sp.-Polyethylene Glycol (AP-PEG) Membranes: Preparation, Characterization and Their Application as Encapsulant. The development of research on materials based on local and renewable natural resources has been continuously being developed recently. This is based on the need for new materials with more favorable characteristics and can be used in specific applications. This research aims to study the synthesis of alginate-polyethylene glycol (AP-PEG) membranes and their application as an encapsulant. The alginate was extracted from the brown seaweed Padina sp. by maceration method using alginic acid pathway. Alginate Padina sp.-polyethylene glycol (AP-PEG) alginate membrane was prepared with a ratio of PEG:AP = 1: 5, 1:10, 1:15 and 0:1 (w/w). The functional group analysis showed that the resulting AP-PEG membranes were predicted as a result of physical blending due to no new functional groups are formed. The membrane with a weight ratio of PEG:AP = 1:15 had the best characteristics, with a percentage of swelling of 1465.5%, stress of 14.588 MPa, 0.07 strain, and Young Modulus of 193.13 MPa. Morphological analysis showed that the membrane obtained had many cavities. The dissolution test showed that the AP-PEG membrane was able to release vitamin C of 78.12% for 60 minutes at pH 1.2 and no cracking was observed, while at pH 7.2 the membrane was able to distribute vitamin C by 83.54% and cracking occurs within 12 minutes. The results of this study indicate that AP-PEG composites can be made from brown seaweed and have good encapsulant capabilities.

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“…It also shows promising effects against cancer, allergies, diabetes, inflammation, and viral and microbial infections [2]. Seaweed is one of Indonesia's biological resources that have good potential to produce alginate, but it is necessary to find an appropriate alginate extraction method [3].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Sustainability Status and Management of Brown Seaweed Sargassum sp. in the Waters of Ujung Kulon Conservation Area

Forestin,

Dewi,

Widowati

2024

AJOCR

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The potential of seaweed resources in Indonesia has a significant economic value that is quite competitive and useful in the food and non-food sectors. One of the habitats of Sargassum sp. in Indonesia is Ujung Kulon, Banten Province. However, the existence of this species has not been utilized optimally and sustainably by the community. In addition, the problem is the lack of community participation in conservation water areas and sustainable management. The study aimed to determine the resource potential of brown seaweed Sargassum sp. in the location. In addition, it will evaluate the management and utilization, as well as the role of the community in sustainable management. Sustainability analysis was conducted using the Multi-Dimensional Scaling (MDS) technique through the RAPFISH (Rapid Appraisal for Fisheries) approach reinforced with Monte Carlo and Leverage analyses. The preparation of sustainability attributes is based on ecological, economic, social, and institutional dimensions. The results of this study showed that each dimension's value for the environmental dimension (66.15 entirely) is sustainable. The sustainability index value in the economic dimension (81.68) is sustainable. The results of the ordination analysis show that the sustainability index value in the social dimension (20.97) is not sustainable, institutional (31.92) with less sustainable status, so it needs to be a top priority for improvement on several sensitive attributes as leverage factors. In this case, the economic dimension is the value with the highest index, which aligns with the main livelihoods of the conservation area's people. As for the social and institutional dimensions, appropriate improvements still need to be made to support sustainable development. These results are expected to provide information and illustrations for stakeholders and the community in sustainable management efforts in formulating policy strategies.

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

Cited by 7 publications

References 5 publications

The value of imbibition and syneresis for dental impression on red seaweed: a laboratory experiment

The value of imbibition and syneresis for dental impression on red seaweed: a laboratory experiment

Membran Alginat Padina sp. - Polietilen Glikol (AP-PEG): Preparasi, Karakterisasi dan Aplikasinya sebagai Enkapsulan

Analysis of Sustainability Status and Management of Brown Seaweed Sargassum sp. in the Waters of Ujung Kulon Conservation Area

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