Microcrystalline Cellulose from Plant Wastes through Sodium Hydroxide-Anthraquinone-Ethanol Pulping

Oluwasina, Olugbenga Oludayo; Lajide, Labunmi; Owolabi, Bodunde Joseph

doi:10.15376/biores.9.4.6166-6192

Cited by 21 publications

(19 citation statements)

References 60 publications

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“…Accordingly, the poor flowability behaviors are obvious from the Hausner's ratio and Carr's index results. The flowability results obtained for BH-MCC were not unusual, as other authors had reported similar values for different MCC (Ejikeme, 2008;Bhimte and Tayade, 2007;Ohwoavworhua and Adelakun, 2005;Oluwasina et al, 2014).…”

Section: Crystallinitysupporting

confidence: 73%

Physicochemical, spectroscopic and tableting properties of microcrystalline cellulose obtained from the African breadfruit seed hulls

Nwajiobi¹,

Otaigbe²,

Oriji³

2019

Afr. J. Biotechnol.

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This study evaluates the physicochemical, tableting and spectroscopic properties of microcrystalline cellulose obtained from the African breadfruit seed hulls. The seed hulls were dried, pulverized, sieved and digested with 2% w/v aqueous sodium hydroxide solution. The resultant pulp was further treated with 17.5% w/v NaOH solution and 2.5N hydrochloric acid to produce α-cellulose and microcrystalline cellulose (BH-MCC), respectively. The prepared BH-MCC was characterized by studying their functional groups (using FT-IR), thermal stability using (TGA) and crystallinity index using (XRD). The results showed the composition of cellulose, hemicelluloses and lignin contents of the seed hulls were 39, 38 and 17%, respectively. The percentage yields of the isolated α-cellulose and BH-MCC were 15.5 and 86.8%, respectively. The bulk, tapped and true densities were 0.33, 0.50 and 1.57 g/ml, respectively. Moisture content, angle of repose and swelling index were 5.3%, 28° and 29%, respectively. Tablets were produced by direct compression using BH-MCC and their analyses showed that the weight uniformity, hardness test, friability and disintegration time values were 190.3±4.2%, 4.95±0.83 kg/cm 2 , 0.04% and 31 s, respectively. The BH-MCC's tablets showed good compliance with the British Pharmacopeia (BP) specification, and can thus be considered useful as a binder and disintegrant in drug formulation.

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Section: Crystallinitysupporting

confidence: 73%

Physicochemical, spectroscopic and tableting properties of microcrystalline cellulose obtained from the African breadfruit seed hulls

Nwajiobi¹,

Otaigbe²,

Oriji³

2019

Afr. J. Biotechnol.

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“…The high resolution XPS spectra of 5 display peaks at 101.8 eV corresponding to (Fig. 3 c) 36 ; 710.26 eV and 723.85 eV corresponding to and of and (Fig. 3 d) 37 , 38 .…”

Section: Resultsmentioning

confidence: 99%

A magnetically retrievable mixed-valent Fe3O4@SiO2/Pd0/PdII nanocomposite exhibiting facile tandem Suzuki coupling/transfer hydrogenation reaction

Singh

Mishra

Sahoo

et al. 2021

Sci Rep

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Herein, we report a magnetically retrievable mixed-valent Fe3O4@SiO2/Pd0/PdIINP (5) nanocomposite system for tandem Suzuki coupling/transfer hydrogenation reaction. The nanocomposite 5 was prepared first by making a layer of $$\hbox {SiO}_{2}$$ SiO 2 on $$\hbox {Fe}_{3}\hbox {O}_{4}\hbox {NP}$$ Fe 3 O 4 NP followed by deposition of $$\hbox {Pd}^{0}$$ Pd 0 and sorption of $$\hbox {Pd}^{\mathrm{II}}$$ Pd II ions successively onto the surface of Fe3O4@SiO2NP. The nanocomposite was characterized by powder XRD, electron microscopy (SEM-EDS and TEM-EDS) and XPS spectroscopy techniques. The mixed-valent $$\hbox {Pd}^{0}/\hbox {Pd}^{\mathrm{II}}$$ Pd 0 / Pd II present onto the surface of nanocomposite 5 was confirmed by XPS technique. Interestingly, the mixed-valent nanocomposite Fe3O4@SiO2/Pd0/PdIINP (5) exhibited tandem Suzuki coupling/transfer hydrogenation reaction during the reaction of aryl bromide with aryl boronic acid (90% of C). The nanocomposite 5 displayed much better reactivity as compared to the monovalent Fe3O4@SiO2/Pd0NP (3) (25% of C) and Fe3O4@SiO2/PdIINP (4) (15% of C) nanocomposites. Further, because of the presence of magnetic $$\hbox {Fe}_{3}\hbox {O}_{4}$$ Fe 3 O 4 , the nanocomposite displayed its facile separation from the reaction mixture and reused at least for five catalytic cycles.

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“…The equatorial proton of the anhydroglucose unit of starch (Oluwasina et al . ) (δ 5.2–5.4 ppm) was considered to be the internal standard. The extent of OSA substitution was determined by integration of the methyl protons of the OSA (δ 0.8–0.9 ppm).…”

Section: Methodsmentioning

confidence: 99%

Utilization of Modified Wheat and Tapioca Starches as Fat Replacements in Bread Formulation

Balic

Miljkovic

Özsisli

et al. 2016

Journal of Food Processing and Preservation

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Using fat in bread production is expensive, and from the diet point of view, it counts as high caloric food. Since obesity is a significant problem in the USA and many other countries, food industries are turning to the fat replacers in food. This research investigated the effectiveness of octenyl succinate anhydride (OSA) modified starches, from two sources (wheat and tapioca), as fat replacers in bread formulation. Sample for control was 2% shortening, and for test samples 2% and 4% OSA modified starch and tapioca were used as fat replacers. Tests were performed on dough and baked product (bread). Results showed that samples with 4% OSA modified wheat and tapioca starch can be used as fat replacers in bread production. Dough and bread properties in comparison with control sample with 2% shortening had better or the same characteristics. Practical Applications Modification of starch with octenyl succinic anhydride (OSA) alters the starch properties in many ways that are beneficial to the food industry. Because of the dual, hydrophobic/hydrophilic, nature of OSA starches they have applications as emulsifier or fat‐replacement ingredients in bakery products. Modification of starch with OSA also changes the levels of slowly digestible starch, which is an added benefit for formulation of low calorie breads using OSA starches as fat‐replacers. It is important to carefully investigate the use of OSA starches as fat‐replacers to determine their specific functionality and to develop a formula with the same characteristics as bread containing fat.

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Microcrystalline Cellulose from Plant Wastes through Sodium Hydroxide-Anthraquinone-Ethanol Pulping

Cited by 21 publications

References 60 publications

Physicochemical, spectroscopic and tableting properties of microcrystalline cellulose obtained from the African breadfruit seed hulls

Physicochemical, spectroscopic and tableting properties of microcrystalline cellulose obtained from the African breadfruit seed hulls

A magnetically retrievable mixed-valent Fe3O4@SiO2/Pd0/PdII nanocomposite exhibiting facile tandem Suzuki coupling/transfer hydrogenation reaction

Utilization of Modified Wheat and Tapioca Starches as Fat Replacements in Bread Formulation

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