Optimization of the extraction of natural antioxidants from <i>Coffea robusta</i> leaves and evaluation of their ability to preserve palm olein from oxidation during accelerated storage

Teboukeu, Gires Boungo; Djikeng, Fabrice Tonfack; Klang, Mathilde Julie; Karuna, Mallampalli Sri Lakshmi; Womeni, Hilaire Macaire

doi:10.1002/fsn3.702

Cited by 6 publications

(5 citation statements)

References 28 publications

(42 reference statements)

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“…The central composite design is widely used for fitting a second-order method in RSM, which consisted of four runs at the corners of the square, four runs at the center of this square, and four axial runs. It is also used for estimating the parameters of a full second-order polynomial model [23]. In the present study, the results of 26 trial points tested in a random order based on the CCD by Design Expert software of version 8.0.6.1 (Stat-Ease Inc., Minneapolis, MN, USA), including the design and experimental values, are presented in Table 1.…”

Section: Resultsmentioning

confidence: 99%

Optimizing the Extraction and Encapsulation of Mucilage from Brasenia Schreberi

Luo

Sun

et al. 2019

Polymers

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The mucilage from Brasenia schreberi (BS) exhibits various biological activities, including antialgal, antibacterial, soluble-fiber properties, and excellent lubricating behavior. Thus, the extraction and wide use of mucilage in the food industry are crucial. In this study, the high-speed shear-assisted extraction of mucilage from BS was optimized by using response surface methodology (RSM). The optimal extraction conditions were as follows: Extraction temperature of 82 °C, extraction time of 113 min, liquid–solid ratio of 47 mL/g, and shear speed of 10,000 rpm. Under these conditions, the actual yield of BS mucilage was 71.67%, which highly matched the yield (73.44%) predicted by the regression model. Then, the BS mucilage extract was powdered to prepare the capsule, and the excipients of the capsule were screened using a single-factor test to improve the disintegration property and flowability. The final capsule formulation, which consisted of: 39% BS mucilage powder (60 meshes); 50% microcrystalline cellulose (60 meshes) as the filler; both 10% sodium starch glycolate and PVPP XL-10 (3:1, 60 meshes) as the disintegrant; both 1% colloidal silicon dioxide and sodium stearyl fumarate (1:1, 100 meshes) as the glidant by weight; were used for preparing the weights of a 320 mg/grain of capsule with 154.7 ± 0.95 mg/g polysaccharide content. Overall, the optimized extraction process had a high extraction rate for BS mucilage and the capsule formulation was designed reasonably.

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Section: Resultsmentioning

confidence: 99%

Optimizing the Extraction and Encapsulation of Mucilage from Brasenia Schreberi

Luo

Sun

et al. 2019

Polymers

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“…Caffeic acid Metabolic effects: antidiabetic; other effects: antidepressant, anticancer, and antiviral [35,36] Chlorogenic acid Metabolic effects: anti-inflammatory, antioxidant, and antidiabetic [37,38] Enhydrin Metabolic effects: antidiabetic and antioxidant; other effects: antimicrobial [39,40] Ferulic acid Metabolic effects: antidiabetic; other effects: antimicrobial and anti-carcinogenic [41,42] Melampolide Metabolic effects: antioxidant and reduces angiogenesis; other effects: antimicrobial, inhibition of DNA synthesis, and increased cell apoptosis [43,44] Phenolic acid Metabolic effects: anti-inflammatory, antidiabetic, and antioxidant; other effects: antimicrobial and anticancer [45,46] Uvedafolin Metabolic effects: antidiabetic and anti-inflammatory; other effects: anti-bacterial (against Anthracis and MRSA) and anticancer [47,48] Additionally, some studies suggest that yacon may help protect the liver from damage caused by toxic substances, also due to the antioxidant and anti-inflammatory properties [8,49].…”

Section: Bioactive Compound Biological Effects Referencesmentioning

confidence: 99%

Effects of Smallanthus sonchifolius Flour on Metabolic Parameters: A Systematic Review

Silva,

Bragante,

Junior

et al. 2024

Pharmaceuticals

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Smallanthus sonchifolius, popularly known as yacon, is a member of the Asteraceae family. Due to its medicinal and edible value, yacon is consumed by different populations. Yacon is unique due to its high fructo-oligosaccharide and inulin content, as well as flavonoids, sesquiterpene lactones, and phenolic acids. Roots can be used to produce flour, which is less perishable and can be applied in various industrial products. This systematic review focuses on the effects of yacon flour on metabolic parameters. PubMed, Cochrane, Embase, Science Direct, Scopus, Web of Science, and Google Scholar databases were consulted, and PRISMA guidelines were followed in the selection of the studies. In total, 526 articles were found in the databases, and of these, only 28 full texts were eligible for inclusion. After applying the inclusion and exclusion criteria, seven studies were finally included. The results showed that the use of yacon flour can reduce glycemia, HbA1c, advanced glycation ends, plasma lipids, body fat mass, body weight, and waist circumference and improve intestinal microbiota and the antioxidant status. Further exploration of the effects of yacon flour is warranted, and additional clinical trials are necessary to determine the optimal daily consumption levels required to assist in improving metabolic parameters.

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“…Untuk mendapatkan ekstrak metanolik sampel kopi, digunakan pelarut metanol karena kemampuannya dalam mengekstrak berbagai senyawa aktif dari bahan tanaman baik yang bersifat polar, semipolar, maupun nonpolar (Zhang et al, 2018;Truong et al, 2019). Konsentrasi metanol 80% (campuran metanol-akuades) dipilih karena merupakan kondisi pelarut optimum untuk mengekstrak komponen antioksidan alami yang berasal dari bahan tanaman (Anwar et al, 2010;Teboukeu et al, 2018). Metode sonikasi dilakukan untuk meningkatkan permeabilitas dinding sel sampel kopi, dengan penerapan ultrasound pada frekuensi yang sangat tinggi, agar pelarut ekstraksi dapat lebih mudah berpenetrasi ke dalam matriks sampel kopi, sehingga proses ekstraksi berjalan lebih efisien (Michail et al, 2016).…”

Section: Hasil Dan Pembahasanunclassified

Fingerprinting FTIR-ATR Fraksi Kopi Robusta dan Arabika serta Korelasinya terhadap Aktivitas Antioksidan

Simatupang

Herawati

Yuliana

2023

J. Teknol Industri Pangan

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Coffee has a positive effect on health due to its high content of antioxidant compounds. The potential antioxidant activity of coffee is strongly influenced by its chemical compound profile. This study aimed to analyze the effect of different solvents on the chemical metabolites profile, antioxidant activity, and to determine the relevant chemical functional groups which positively contribute to the coffee’s antioxidant activity. In this study, methanolic extract of coffee samples from robusta and arabica varieties were fractionated by liquid-liquid fractionation method using four solvents with different polarities. ABTS (2,2'-azinobis (3-ethylbenzothiazoline-6-sulphonic acid) and cupric reducing antioxidant capacity (CUPRAC) assays were applied to measure the antioxidant activity of the coffee fractions. Fourier Transform Infrared- Attenuated Total Reflectance (FTIR-ATR) based chemometric approach was used to identify the compound functional groups as the fingerprinting profile of the coffee fractions. Correlation between the FTIR-ATR fingerprinting with the antioxidant activity of the coffee fractions was studied using multivariate data analysis, i.e. Principal Component Analysis (PCA) and Orthogonal Partial Least Squares (OPLS). From this study, a reliable PCA model to evaluate the effect of different solvents to FTIR-ATR fingerprinting profile was produced. The correlation between FTIR-ATR fingerprinting profile with the antioxidant activity and the characterization of the chemical functional groups relevant to its antioxidant activity can be analyzed by a reliable OPLS model obtained. This study suggests that the highest antioxidant potential in coffee is found in ethyl acetate fraction both in robusta and arabica coffee samples, while the relevant chemical functional groups having positive correlation to antioxidant activity of coffee were phenol, carbonyl, cyclohexane, aromatic, amide, phenyl, amino, and alkene groups.

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Optimization of the extraction of natural antioxidants from Coffea robusta leaves and evaluation of their ability to preserve palm olein from oxidation during accelerated storage

Cited by 6 publications

References 28 publications

Optimizing the Extraction and Encapsulation of Mucilage from Brasenia Schreberi

Optimizing the Extraction and Encapsulation of Mucilage from Brasenia Schreberi

Effects of Smallanthus sonchifolius Flour on Metabolic Parameters: A Systematic Review

Fingerprinting FTIR-ATR Fraksi Kopi Robusta dan Arabika serta Korelasinya terhadap Aktivitas Antioksidan

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