Physicochemical Characterization of Robusta Spent Coffee Ground Oil for Biodiesel Manufacturing

Dang, Chi-Hien; Nguyen, Thanh-Danh

doi:10.1007/s12649-018-0287-9

Cited by 39 publications

(22 citation statements)

References 40 publications

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“…[21] Recently, a study on SCG obtained from various Vietnamese coffees has indicated oil content ranged from 6 to 16 g/100 g DW. [22] Slight differences in oil content among the studies could be due to oil extraction methods. The present study employed acid hydrolysis combined with organic solvents to extract oil while the prior research took advantage of organic solvents with or without a Soxhlet apparatus.…”

Section: Oil Content and Fatty Acid Compositionmentioning

confidence: 99%

“…[8] It is noted that studies conducted by Jenkins et al (2014) and Dang and Nguyen (2019) indicated fatty acid composition of SCG obtained from Vietnamese coffee was different with respect to weight percentages of palmitic, oleic, and linoleic acids. [21,22] In comparison with soybean and corn oils, [23,24] the SCG oil consists of relatively similar linoleic acid and PUFA contents (Table 1). Conversely, the SCG oil and palm oil share similarities in fatty acid composition with respect to SFA content.…”

Section: Oil Content and Fatty Acid Compositionmentioning

confidence: 99%

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Evaluation of fatty acids, phenolics and bioactivities of spent coffee grounds prepared from Vietnamese coffee

Huynh

et al. 2021

International Journal of Food Properties

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Spent coffee ground (SCG) is a residue released during coffee brewing. Disposal of SCG is able to lead to a loss of bioactive constituents and have a negative impact upon the environment. This study aimed to explore fatty acids, bioactive phenolics, antioxidant and anti-aging potentials of SCG samples obtained from coffee shops in Ho Chi Minh city, Vietnam. The oil content of the SCG samples ranged from 6.3 to 10.5%, and linoleic (43%), palmitic (33.4%) and oleic (11%) acids were identified as major constituents of the oil. Chlorogenic acid was the most abundant phenolic acid examined (832.9-7657.7 μg/g of dry weight), followed by ferulic acid (40.5-1041.7 μg/ g). Through anti-collagenase and anti-elastase assays, SCG showed a promising anti-aging activity, with IC 50 values comparable with those of epigallocatechin gallate. The correlation analysis revealed gallic acid positively correlated with the free radical scavenging potential evaluated by DPPH (2,2-diphenyl-1-picrylhydrazyl) assay and the inhibitory effect on elastase. The results demonstrated that utilization of SCG prepared from Vietnamese coffee could open new avenues for food and cosmeceutical industry.

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Section: Oil Content and Fatty Acid Compositionmentioning

confidence: 99%

Section: Oil Content and Fatty Acid Compositionmentioning

confidence: 99%

Evaluation of fatty acids, phenolics and bioactivities of spent coffee grounds prepared from Vietnamese coffee

Huynh

et al. 2021

International Journal of Food Properties

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“…Coffee is grown in about 80 countries [19] with Brazil and Vietnam represent the major coffee producing and exporting countries around the world (35% and 15% respectively) (Fig. 3) [20,21]. The main coffeebrewing methods are boiling (Greek/Turkish, Scandinavian, etc., with caffeine content less than 50 mg cup -1 ), the filter (filter coffee: caffeine content, 100-150 mg cup -1 ), the dissolving (instant/soluble coffee: caffeine content, 65-100 mg cup -1 ), and the pressure method (espresso: caffeine content, 60 mg cup -1 ).…”

Section: Overview Of Coffee and Coffee Industrymentioning

confidence: 99%

Valorization of spent coffee grounds into biofuels and value-added products: Pathway towards integrated bio-refinery

Atabani

Al-Muhtaseb

Kumar

et al. 2019

Fuel

135

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“…DTA curves showed exothermic peaks occurring at 318°C and 462°C for CL-AgNPs and 308°C for CL-AuNPs. The exothermic peaks are attributed to oxidation of organic compounds presented in the nanoparticles [39]. Data of TG analysis can determine the total amount of organic components that might be present in the plant extract and were capped and adsorbed on the MNP surface [40,41].…”

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confidence: 99%

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract from Crinum latifolium Leaf and Their Applications Forward Antibacterial Effect and Wastewater Treatment

Nguyen

Huynh

et al. 2019

Journal of Nanomaterials

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Crinum latifolium (CL) leaf is a source of various biologically active compounds such as alkaloid and phenolic compounds, which exhibit anti-inflammatory, antitumor, and antimicrobial effects. In the purpose of expanding applications for the field of bionanotechnology, we report biosynthesis of silver nanoparticles (AgNPs) and gold nanoparticles (AuNPs) by using aqueous extract from C. latifolium leaf and explore antibacterial activity and catalytic performance for degradation of pollutants. The formation of CL-AgNPs and CL-AuNPs is confirmed and optimized by UV-visible spectroscopy with surface plasmon resonance (SPR) peaks at around 402 and 539 nm, respectively. The spherical CL-AgNPs have an average diameter of 20.5 nm and the multishaped CL-AuNPs possess an average size of 17.6 nm. The actions of four bacterial strains were strongly inhibited by using the CL-AgNPs. Furthermore, the biosynthesized metallic nanoparticles (MNPs) exhibited the excellent catalytic degradation performance of pollutants.

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Physicochemical Characterization of Robusta Spent Coffee Ground Oil for Biodiesel Manufacturing

Cited by 39 publications

References 40 publications

Evaluation of fatty acids, phenolics and bioactivities of spent coffee grounds prepared from Vietnamese coffee

Evaluation of fatty acids, phenolics and bioactivities of spent coffee grounds prepared from Vietnamese coffee

Valorization of spent coffee grounds into biofuels and value-added products: Pathway towards integrated bio-refinery

Biosynthesis of Silver and Gold Nanoparticles Using Aqueous Extract from Crinum latifolium Leaf and Their Applications Forward Antibacterial Effect and Wastewater Treatment

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