“…These irregularities should occur in the chitosan particles due to the processes such as the milling, drying, and the use of chemicals. The chitosan produced in the present work was similar to that reported by Agarwal et al [ 28 ] and Muhammed et al [ 29 ]. Fig.…”
Highlights
The chitosan obtained shows physicochemical properties similar to commercials.
The low molecular chitosan for harvesting microalgae shows better results than aluminum sulfate.
The use chitosan for harvesting microalgae reduces the process costs.
“…These irregularities should occur in the chitosan particles due to the processes such as the milling, drying, and the use of chemicals. The chitosan produced in the present work was similar to that reported by Agarwal et al [ 28 ] and Muhammed et al [ 29 ]. Fig.…”
Highlights
The chitosan obtained shows physicochemical properties similar to commercials.
The low molecular chitosan for harvesting microalgae shows better results than aluminum sulfate.
The use chitosan for harvesting microalgae reduces the process costs.
“…It has established significant functional groups like amino (1645.25 cm -1 ) and hydroxyl (3469.63 cm -1 ).) The absorptions of amino and hydroxyl groups are the known primary FT-IR profiles of chitosan (Agarwal et al, 2018). Also, the FT-IR profile of the present study was parallel to the works of On the other hand, the yield of synthesized biomaterial plays a vital role in accessing the maximum amount can be produced from the raw material.…”
Section: Discussionsupporting
confidence: 67%
“…The yielded result of the present study is quite higher than that of Nessa et al (2010) where they reported chitosan yield of 16.4-19.6%. The difference in percent yield was seen due to the difference in the preparation method of chitosan as well as of chitin (Agarwal et al, 2018). On the other hand, Ahing and Wid (2016) produced 3.10-5.2g with an average of 4.09% of chitosan from shrimp shell wastes.…”
Section: Discussionmentioning
confidence: 99%
“…An increase in solubility is observed with the decrease in the degree of acetylation that is evident in the present study which demonstrated 70% solubility obtained, where higher solubility means better chitosan is produced (Ahing and Wid, 2016). Chitosan showed higher solubility due to its lower acetylation values (Agarwal et al, 2018). Meanwhile, the pH level decreases the absorption capacity of the urchin powder while high levels increase its adsorption capacity (Filipkowska et al, 2010).…”
Section: Discussionmentioning
confidence: 99%
“…The retardant (insoluble fraction) collected on the membrane filter was washed with distilled water then dried. Chitosan solubility in percentage was calculated by the following equation: Solubility (%) = 100-[(Weight of insoluble fraction/Initial weight of sample)*100] (Agarwal et al, 2018).…”
Section: Physicochemical Properties Of the Chitosan Powdermentioning
Postharvest loss of bananas due to ripening acceleration is one of the problems of local Filipino farmers. This problem has resulted in profit losses which could bring serious effects in the agricultural sector. Thus, this study aims to derive chitosan, a biopolymer and non-toxic material from the test wastes of the Philippine blue-eyed sea urchins (Diadema savignyi Michelin, 1845) to be used as a surface coating for ‘Saba’ banana (Musa x paradisiaca) to delay the ripening process. The chitosan was obtained by decolorization, pulverization, deproteinization, demineralization, and deacetylation of the sea urchins’ tests. The derived chitosan was validated by its Degree of Acetylation (DA) (35.65%) based on amino and hydroxyl group at peaks 1645.25 cm-1 and 3469.63 cm-1. Scanning Electron Microscopy (SEM) micrographs confirmed the amorphous and non-homogeneous structure of chitosan. Results also showed that the chitosan-coated bananas had lower weight loss, greener color, firmer, and lower disease incidence after the seven-day observation as compared with that of the uncoated samples. The study implies that the synthesized chitosan from the test wastes of Philippine blue-eyed sea urchin can be a potential natural coating material in delaying the rapid ripening of ‘Saba’ banana.
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