Valorisation and Characterization of Allium cepa var. aggregatum Biowastes for the Production of Microcrystalline Cellulose

Varghese, Shery M.; Bhosale, Yuvraj Khasherao; Nair, U K Aruna; Hema, Vincent; Sinija, V. R.

doi:10.1007/s12649-021-01625-5

Cited by 6 publications

(8 citation statements)

References 41 publications

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“…This peak corresponds to the aromatic stretching of CC in lignin 40 . The absorption peak at 1304 cm −1 corresponds to the COC stretching of cellulose 36 …”

Section: Resultsmentioning

confidence: 98%

“…The peak at 1733 cm −1 present in the raw fiber signifies CO stretching of the carbonyl group of hemicellulose and lignin. This characteristic peak disappears in alkali treated and bleached fiber and MFC, resulting in the complete removal of hemicelluloses and lignin 36,39 . The disappearance of the peak at 1640–1633 cm −1 in MFC implies the removal of lignin after chemical treatment.…”

Section: Resultsmentioning

confidence: 98%

“…The values reported were in good agreement with literature studies. The broad peak that appears in the range of 3299, 3337 — , and 3330 cm −1 corresponds to the OH stretching of raw fiber, alkali treated and bleached fiber, and MFC, respectively 36 . The peaks at 2915, 2903 — , and 2890 cm −1 are attributed to the CH stretching frequency of cellulose 36 .…”

Section: Resultsmentioning

confidence: 99%

“…The crystallite size was calculated based on the Scherrer equation 36,37 :

D_{002} = \frac{italickλ}{β \cos θ},

where k is the Scherrer constant (0.94), λ is the wavelength of light used (0.15406 nm), β is the full width at half maximum in radians, θ is the Bragg's angle.…”

Section: Methodsmentioning

confidence: 99%

“…The broad peak that appears in the range of 3299, 3337 -, and 3330 cm À1 corresponds to the OH stretching of raw fiber, alkali treated and bleached fiber, and MFC, respectively. 36 The peaks at 2915, 2903 -, and 2890 cm À1 are attributed to the C H stretching frequency of cellulose. 36 The peak at 1733 cm À1 present in the raw fiber signifies C O stretching of the carbonyl group of hemicellulose and lignin.…”

Section: Structural and Functional Group Analysismentioning

confidence: 99%

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Extraction of microfibrillated cellulose from elephant egesta and evaluating its reinforcing ability in pectin/alginate packaging films

Varughese,

Gokul,

Keerthi

2023

Polymer Composites

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Pectin and sodium alginate (SA) composite films were prepared by adding various concentrations of microfibrillated cellulose (MFC) via solvent casting using glycerol as a plasticizer. Herein, elephant egesta was turned into cellulose fibers from which MFC was extracted. This paper aims to examine the reinforcing property of MFC on the pectin/SA matrix. Fibrous morphology, qualitative analysis, crystallinity, and thermal stability of MFC were confirmed through SEM, FT‐IR, XRD, and TGA‐DTA analysis, respectively. The impact of various compositions of MFC (0.5%, 1%, 2%, and 5%) on the biopolymeric blend was analyzed based on mechanical and optical properties, hygroscopicity, and hydrophilicity. The outcomes revealed that adding MFC to 5% enhances the film's tensile strength by 51%. The produced film also served as a successful barrier against UV–visible light. Moreover, it exhibits a tremendous increase in contact angle and a decrease in properties such as elongation at break, moisture content (MC) and water solubility (WS). Therefore, MFC can be an excellent reinforcing agent in biodegradable polymer composites, which finds application in the food packaging industry.Highlights Microfibrillated cellulose was successfully extracted from elephant egesta and characterized. Energy efficient method of extraction. Pectin/SA films were incorporated with the extracted MFC via solvent casting. Prepared films show enhanced tensile strength and UV–visible barrier property which makes them suitable for packaging purposes. Bio‐based polymers reduce environmental pollution.

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“…This peak corresponds to the aromatic stretching of CC in lignin 40 . The absorption peak at 1304 cm −1 corresponds to the COC stretching of cellulose 36 …”

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

“…The crystallite size was calculated based on the Scherrer equation 36,37 :

D_{002} = \frac{italickλ}{β \cos θ},

where k is the Scherrer constant (0.94), λ is the wavelength of light used (0.15406 nm), β is the full width at half maximum in radians, θ is the Bragg's angle.…”

Section: Methodsmentioning

confidence: 99%

Section: Structural and Functional Group Analysismentioning

confidence: 99%

See 3 more Smart Citations