A Promising Potential of Brown Algae Sargassum polycystum as Irreversible Hydrocolloid Impression Material

Abstract

This study aimed to investigate the potential use of brown algae Sargassum polycystum as irreversible hydrocolloid (alginate) impression material. Potassium alginate extracted from Sargassum polycystum was prepared in three different compositions (14%, 15%, and 16%) and mixed with other standard components to form an alginate impression material. Prior to that, the purity of potassium alginate was quantified with Fourier Transform Infrared Spectroscopy (FTIR) analysis. As a control material, the alginate impression material from a commercially available product was used. All alginate impression materials were then applied to a die stone model. Dimensional accuracy was measured by calculating the mesiodistal width of incisors in the generated dental cast using a digital caliper 0.01 accuracy (five replications). In addition, to evaluate the dimensional stability, the impression results were poured at four different periods (immediately, 5 min, 10 min, and 15 min). An independent t-test was performed to compare the measurement results with p < 0.05 considered significant. Analytical results confirm that the impression material containing 15% potassium alginate gives the best dimensional accuracy similar to control (p > 0.05). Meanwhile, the optimal dimensional stability was produced in the impression material containing 16% potassium alginate. Our study suggested that brown algae Sargassum polycystum has a promising potential to be used as an alginate impression material in clinical application.

Preliminary Characterization of a Spray-Dried Hydrocolloid from a High Andean Algae (Nostoc sphaericum)

“…It was clearly observed that the spray-dried nostoc presented higher intensity for the carboxyl, carbonyl, and hydroxyl functional groups, so it would present an anionic character, which is characteristic of hydrocolloids [ 6 , 52 , 53 , 54 , 55 , 56 ], making it a potential material for use as a food stabilizer [ 11 ].…”

Formulation of Novel Composite (Activated Nanoclay/Hydrocolloid of Nostoc sphaericum) and Its Application in the Removal of Heavy Metals from Wastewater

“…Around 1530 cm −1 , low intensity spectra are observed, corresponding to the stretching vibrations of the COO- and -C=O bonds of the carboxylate anions [ 70 ]; at 1416 cm −1 stretching of the -C-O, -C-H, and -OH single bonds were observed; at 1060 cm −1 a high intensity peak is presented, which would be due to the manifestation of bond stretching -C-O, C-O-C, C-OH, a peak at 815 cm −1 of low intensity that indicates deformation of the -CH 2 bond corresponding to methylene groups, while between 800 and 580 cm −1 different low intensity spectra are presented, this area is known as the “fingerprint” of the materials, these spectra are attributed to stretching of the -C-H and -C-O bonds, belonging to starches and glucose, which is characteristic of hydrocolloids from algae [ 13 , 27 , 70 , 71 , 72 , 73 ].…”

“…Regarding the hydrocolloid CH, a peak was observed around 3400 cm −1 , which corresponds to a vibration of the -OH and -NH bond (Figure 3a), characteristic of amides and carboxylic acids, which would allow the establishment of hydrogen bridge bonds; at 2927 cm −1 asymmetric stretching vibrations of the C-H bond are presented, corresponding to the hydrocarbon chains of carbohydrates; another zone with high intensity is found around 1646 cm −1 , it corresponds to a vibration of the stretching of the carbonyl group -C=O, and -OH stretching of the water present, which suggests high hygroscopicity [68,69]. Around 1530 cm −1 , low intensity spectra are observed, corresponding to the stretching vibrations of the COO-and -C=O bonds of the carboxylate anions [70]; at 1416 cm −1 stretching of the -C-O, -C-H, and -OH single bonds were observed; at 1060 cm −1 a high intensity peak is presented, which would be due to the manifestation of bond stretching -C-O, C-O-C, C-OH, a peak at 815 cm −1 of low intensity that indicates deformation of the -CH 2 bond corresponding to methylene groups, while between 800 and 580 cm −1 different low intensity spectra are presented, this area is known as the "fingerprint" of the materials, these spectra are attributed to stretching of the -C-H and -C-O bonds, belonging to starches and glucose, which is characteristic of hydrocolloids from algae [13,27,[70][71][72][73].…”

Utilization of brown algae (Sargassum Sp) as dental impression material

“…Polimer alginat bersifat hidrofilik yang merupakan molekul linier dengan berat molekul tinggi, mudah sekali menyerap air sehingga senyawa alginat dapat dimanfaatkan sebagai bahan pengemulsi, pengental dan penstabil. 2,16,17 Alginat adalah suatu istilah umum untuk senyawa dalam bentuk garam dan turunan asam alginat. Alginat merupakan polisakarida yang berbentuk gel yang diekstraksi dari alga coklat.…”

“…Natrium alginat dan potasium alginat dapat diekstraksi dari spesies alga coklat seperti Sargassum sp., Turbinaria sp., Hormophysa sp., dan Padina sp. 16,17 Sodium alginat adalah salah satu jenis elektrolit molekul makro organik dari spesies rumput laut coklat dengan rumus kimia (C6H7NaO6)n. Sodium alginat dapat larut dalam air dingin atau air panas dan mampu membentuk larutan yang stabil. Sodium alginat digunakan sebagai bahan pembentuk gel dan pengental yang bersifat termoreversibel dalam berbagai bidang industri, dan juga dipakai sebagai suspending emulsifying, dan stabilizing agent.…”