Nanocarbonfibril in rice flour charcoal

Mopoung, Sumrit; Sirikulkajorn, Anchalee; Dummun, Duennapa; Luethanom, Pichyawee

doi:10.5897/ijps11.1615

Cited by 3 publications

(2 citation statements)

References 25 publications

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“…These flour samples showed the peak at 2931 cm −1 was attributed to C-H bond stretching. These results were consistent with the research conducted by Mopoung, Sirikulkajorn, Dummun, and Luethanom (2012). The FTIR analysis indicated that the waste flour and rice flour showed absorption peaks in the same regions.…”

Section: Proximate Analysis Of Waste Floursupporting

confidence: 92%

Production of flour film from waste flour during noodle production and its application for preservation of fresh strawberries

Muangrat

Nuankham

2018

CyTA - Journal of Food

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The flour film (75% w/v) with 40% w/w plasticizer/waste flour, at 2:1 w/w glycerol:sorbitol and formulated with 20% w/w potassium sorbate/waste flour, was used to cover fresh strawberries on polystyrene foam, and the quality of the fruit was monitored during storage at 5°C and 90% relative humidity for 9 days. The results revealed that the fresh strawberries covered with such film had average phenolic contents, free radical antioxidant activity, and firmness equal to 326.12 mg gallic acid/100 g fresh strawberry and 2.66 mg Trolox/g strawberry, and 0.27 N, respectively. These values were higher than those obtained for the strawberries covered with film having no added potassium sorbate, and the strawberries with no film (control), respectively. Also, among the samples studied, the total plate counts (log CFU/g) of the stored strawberries covered with film, containing 20% w/w potassium sorbate/waste flour, were lower. Producción de película de harina a partir de harina de desperdicio obtenida durante la elaboración de fideos y su aplicación en la preservación de fresas frescas RESUMEN En el presente estudio se utilizó una película de harina (75% p/v) con 40% p/p plastificante/harina de desperdicio, en 2:1 p/p glicerol: sorbitol, y formulada con 20% p/p sorbato potásico/harina de desperdicio, para cubrir fresas frescas en poliestireno expandible; posteriormente, se monitoreó la calidad de la fruta durante su almacenamiento a 5°C y 90% humedad relativa (HR) durante 9 días. Los resultados obtenidos permitieron constatar que las fresas frescas cubiertas con dicha película mostraron un contenido de fenólicos promedio, actividad antioxidante de radicales libres y firmeza equivalentes a 326.12 mg ácido gálico/100 g fresas frescas, 2.66 mg Trolox/g de fresas y 0.27 N, respectivamente. Estos valores superan los registrados para las fresas cubiertas con película sin sorbato potásico agregado y para las fresas sin película (control). Además de las muestras estudiadas, los recuentos por placa totales (log CFU/g) de las fresas almacenadas cubiertas con película con 20% p/p sorbato potásico/harina de desperdicio fueron más bajos.

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Section: Proximate Analysis Of Waste Floursupporting

confidence: 92%

Production of flour film from waste flour during noodle production and its application for preservation of fresh strawberries

Muangrat

Nuankham

2018

CyTA - Journal of Food

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“…The result of the surface area further indicated that carbonization followed by chemical activation resulted in activated carbons with high surface area. This is as a result of dehydration of the precursor by the activating agents [64]. The SEM micrograph for the activated carbon shows a broad porous surface (Fig.…”

Section: Characteristics Of the Adsorbentmentioning

confidence: 98%

Optimization of Process Parameters for Adsorption of Hexavalent Chromium from Wastewater Using Response Surface Methodology

Ugwu

Agunwamba

2022

JERA

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This study investigated the optimization of process parameters for adsorption of hexavalent chromium with activated carbons extracted from palm tree leaves of Nigerian origin. The effect of process parameters such as adsorbent dosage, initial chromium concentration, temperature, contact time, and adsorbent particle size was studied with the aid of Central Composite Design. The result showed that for the adsorbent dosage, initial concentration, temperature, contact time, and particle size, the optimum conditions were found to be 20 mg, 80 mg/l, 40° C, 40 minutes, and 1400µm, respectively. The actual and predicted values obtained were 72.96 % as well as 70.33 %, respectively, indicating a good correlation with a comparatively small variance of 2.66 %. The Langmuir isotherm showed an R2 of 0.981 and thereby showing better linearity when compared with the Freundlich isotherm. The result of the adsorption kinetics indicated that it was better described by the Pseudo-second order model. The overall adsorption process on the other hand showed an exothermic reaction with an enthalpy value of -18.707. The values of Gibbs free energy (∆G) at various temperatures also revealed a spontaneous reaction and a positive value of entropy. The results obtained showed that the adsorbent was effective in the adsorption of hexavalent chromium.

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Spectroscopic Analysis of Heterogeneous Biocatalysts for Biodiesel Production from Expired Sunflower Cooking Oil

Wembabazi

Mugisha²,

Ratibu³

et al. 2015

Journal of Spectroscopy

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The study characterized heterogeneous biocatalyst synthesized from sucrose, saw dust, and chicken egg shells using Fourier Transform Infrared (FTIR) spectroscopy coupled with Attenuated Total Reflectance (ATR) technique. Acidic sulphonate (–SO3H) groups were more visible in the spectrum generated for carbonized and sulphonated sucrose than in carbonized and sulphonated saw dust. This was highlighted further by the significantly higher conversion percentage achieved for sulphonated sucrose (62.5%) than sulphonated saw dust (46.6%) during esterification of expired sunflower oil (p=0.05). The spectra for calcinated egg shells also showed that the most active form of calcium oxide was produced at calcination temperature of 1000°C. This was confirmed in the single-step transesterification reaction in which calcium oxide generated at 1000°C yielded the highest biodiesel (87.8%) from expired sunflower oil. The study further demonstrated the versatility of the FTIR technique in qualitative analysis of biodiesel and regular diesel by confirming the presence of specific characteristic peaks of diagnostic importance. These findings therefore highlight the potential of FTIR-ATR as an inexpensive, fast, and accurate diagnostic means for easy identification and characterization of different materials and products.

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Nanocarbonfibril in rice flour charcoal

Cited by 3 publications

References 25 publications

Production of flour film from waste flour during noodle production and its application for preservation of fresh strawberries

Production of flour film from waste flour during noodle production and its application for preservation of fresh strawberries

Optimization of Process Parameters for Adsorption of Hexavalent Chromium from Wastewater Using Response Surface Methodology

Spectroscopic Analysis of Heterogeneous Biocatalysts for Biodiesel Production from Expired Sunflower Cooking Oil

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