Chemical Characterization of Coffee Husks, a By-Product of Coffea arabica Production

Coffee husks are a major by-product of coffee production and are currently being underutilized. The aim of this work was to chemically characterize coffee husks to allow for an adequate evaluation of their potential for valorization. Blanched and non-blanched coffee husks were characterized for extractable and non-extractable phenolics, caffeine, trigonelline content, and for their polysaccharide and proximal composition. The total, soluble and insoluble fiber contents were determined, together with the husks’ technological properties. Antioxidant activity and bioaccessibility of phenolic compounds of coffee husks were evaluated. Two types of husk were studied: one comprised mostly of outer skin and pulp (CH1); and other comprised mostly of parchment (CH2). Blanching had positive effects on non-extractable phenolics, chlorogenic acid and on the bioaccessibility of phenolics, promoting small reductions in extractable phenolics, protocathecuic acid, caffeine and trigonelline contents. Blanched CH1 presented more appropriate properties than CH2 for potential applications in food. It also presented better antioxidant, hydration, and oil holding properties than those of other agri-food by-products. Tentatively identified polysaccharides included galactomannans, arabinogalactans type II, pectin and cellulose.

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Chemical Characterization of The Agroindustrial By-Products Destined for Pig Feeding

10.3390/mol2net-03-05071 ◽

2017 ◽

Author(s):

Santiago Aguiar-Novillo ◽

Edgar Ruben Chicaiza Reisancho ◽

Willam Caicedo-Quinche ◽

Luis Diaz-Suntaxi ◽

Pablo Ernesto Arias ◽

...

Keyword(s):

Chemical Characterization ◽

By Products

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Chemical Characterization of Hydrolyzed Protein Meal Obtained from Trout (Oncorynchus My kiss) By-products Silage

Indian Journal of Science and Technology ◽

10.17485/ijst/2018/v11i16/118634 ◽

2018 ◽

Vol 11 (16) ◽

pp. 1-13

Author(s):

Jos� Luis Hoyos Concha ◽

H�ctor Samuel Villada Castillo ◽

Alejandro Fern�ndez Quintero ◽

Jeimmy Roc�o Bonilla M�ndez ◽

◽

...

Keyword(s):

Chemical Characterization ◽

Protein Meal ◽

Hydrolyzed Protein ◽

By Products

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Chemical characterization of feed coals and combustion-by-products from Brazilian power plants

International Journal of Coal Geology ◽

10.1016/j.coal.2008.07.013 ◽

2008 ◽

Vol 76 (3) ◽

pp. 227-236 ◽

Cited By ~ 56

Author(s):

Fernanda S. Depoi ◽

Dirce Pozebon ◽

Wolfgang D. Kalkreuth

Keyword(s):

Power Plants ◽

Chemical Characterization ◽

By Products

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ETHNO-MEDICINAL POTENTIALS AND PHYTOCHEMICAL PROPERTIES OF Aloe vera: A REVIEW

Journal of Chemical Engineering and Industrial Biotechnology ◽

10.15282/jceib.v5i1.3896 ◽

2019 ◽

Vol 5 (1) ◽

pp. 57-73

Author(s):

John Adewole Alara ◽

Oluwaseun Ruth Alara

Keyword(s):

Analytical Chemistry ◽

Side Effect ◽

Aloe Vera ◽

Chemical Characterization ◽

Adverse Side Effect ◽

Laboratory Equipment ◽

Food Industries ◽

Positive Effects ◽

Bioactive Potential

Aloe vera is a perennial ethno-medicinal potential plant with a xerophytic characteristic, but not a cactus. It has a famous history owing to its phytopharmaceutical properties and this had made it useful in the pharmaceutical, cosmetic and food industries. Studies had shown the positive effects of its extract against bacteria, organisms. The phytochemical properties of A. vera have fungi, virus and parasitic been exploited for various economic and commercial purposes. This review contributes literature on the bioactive potential composition, processing and the pharmaceutical potential uses, an adverse side-effect that might spring up in case of over dosage and important safety precautions are summarized. More scientific innovations and developments in the aspect of analytical chemistry are on the way to provide more acceptable, purified chemical characterization of A. vera using sophisticated laboratory equipment and machines.

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Chemical Characterization of Different Products from the Tunisian Opuntia ficus-indica (L.) Mill.

Foods ◽

10.3390/foods11020155 ◽

2022 ◽

Vol 11 (2) ◽

pp. 155

Author(s):

Ambrogina Albergamo ◽

Angela Giorgia Potortí ◽

Giuseppa Di Bella ◽

Nawres Ben Amor ◽

Giovanna Lo Vecchio ◽

...

Keyword(s):

Chemical Characterization ◽

Prickly Pear ◽

Inorganic Elements ◽

Total Polyphenols ◽

Prickly Pear Cactus ◽

Hydroxybenzoic Acids ◽

Kaempferol Glycosides ◽

By Products ◽

Pear Cactus

Various dried (by-)products from the Tunisian O. ficus-indica were elucidated for their proximate composition, fatty acid (FA) composition, inorganic elements, sugars, and polyphenols. Nopal and prickly pear peel and seeds were abundant in fiber (respectively, 28.39, 12.54, and 16.28%). Seeds had also high protein (17.34%) and may be source of an edible oil, due to lipids (9.65%) poor in saturated FAs (14.12%) and rich in linoleic acid (61.11%). Nopal and peel showed the highest levels of Mg (493.57 and 345.19 mg/100 g), K (6949.57 and 1820.83 mg/100 g), Mn (59.73 and 46.86 mg/Kg) and Fe (23.15 and 15.23 mg/Kg), while the fruit pulp predominantly constituted of sugars, glucose and arabinose being predominant (42.57 and 13.56 g/100 g). Total polyphenols widely varied among the Opuntia products (108.36–4785.36 mg GAE/100 g), being mainly represented by hydroxycinnamic and hydroxybenzoic acids, and flavonoids as well. In particular, peel may be revalorized for these valuable bioactives, including 4-hydroxybenzoic acid (484.95 mg/100 g), cinnamic acid (318.95 mg/100 g), rutin (818.94 mg/100 g), quercetin (605.28 mg/100 g), and several isorhamnetin and kaempferol glycosides. Overall, the Tunisian prickly pear cactus could encourage a sustainable production, an effective waste management, and may provide several benefits for human health, in accordance with the model of the Mediterranean diet.

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Rumen disappearance kinetics and chemical characterization of by-products from cellulosic ethanol production

Animal Feed Science and Technology ◽

10.1016/j.anifeedsci.2010.11.020 ◽

2011 ◽

Vol 165 (3-4) ◽

pp. 151-160 ◽

Cited By ~ 3

Author(s):

S.L. Scott ◽

R.S. Mbifo ◽

J. Chiquette ◽

P. Savoie ◽

G. Turcotte

Keyword(s):

Ethanol Production ◽

Cellulosic Ethanol ◽

Chemical Characterization ◽

By Products ◽

Disappearance Kinetics

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Smectite clay from the Sabga deposit (Cameroon): mineralogical and physicochemical properties

Clay Minerals ◽

10.1180/claymin.2013.048.3.07 ◽

2013 ◽

Vol 48 (3) ◽

pp. 499-512 ◽

Cited By ~ 7

Author(s):

J. R. Mache ◽

P. Signing ◽

A. Njoya ◽

F. Kunyukubundo ◽

J. A. Mbey ◽

...

Keyword(s):

Waste Water Treatment ◽

Size Fraction ◽

Chemical Properties ◽

Chemical Characterization ◽

Exchange Capacity ◽

Mineralogical Characterization ◽

North West ◽

Potential Applications ◽

Physical And Chemical

AbstractThe physicochemical and mineralogical characterization of the <250 μm particle-size fraction from six clay-rich samples from the Sabga deposit (north-west, Cameroon) were carried out to evaluate their potential applications. The major clay mineral is dioctahedral smectite and minor kaolinite is present in three of the clay samples. Cristobalite, feldspars, ilmenite and heulandite are accessory minerals. Application of the Greene-Kelly test revealed that the smectite present is montmorillonite. The chemical composition (wt.%) of the bulk clays consists of (66–70%) SiO2, (13–16%) Al2O3and (2–7%) Fe2O3. Physico-chemical characterization of the clays showed that the cation exchange capacity (CEC) and the specific surface area range from 38 to 46 meq/100 g and from 33 to 90 m2/g respectively. The physical and chemical properties are fully compatible with potential uses in environmental applications. After purification and chemical modification, these materials could also be used in refining edible oil as adsorbent, waste water treatment and wine technology.

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Characterization of the Products and By-products Obtained in the Electrolytic Refining of Copper Using Scraps

Revista de Chimie ◽

10.37358/rc.08.6.1851 ◽

2008 ◽

Vol 59 (6) ◽

Author(s):

Mihai Buzatu ◽

Petru Moldovan ◽

Dionezie Bojin ◽

Mihai Butu ◽

Iozsef Juhasz ◽

...

Keyword(s):

Experimental Data ◽

Emission Spectroscopy ◽

Chemical Characterization ◽

Atomic Emission ◽

Atomic Emission Spectroscopy ◽

Alloying Elements ◽

Electrolytic Refining ◽

By Products

Experimental data from electrolytic refining of copper anodes obtained from scraps are presented in this paper. Alloying elements behaviour from the secondary copper was studied by SEM microscopy, EDAX chemical characterization, and atomic emission spectroscopy.

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