scholarly journals Optimization of banana crop by-products solvent extraction for the production of bioactive compounds

2021 ◽  
Author(s):  
Sara Díaz ◽  
Antonio N. Benítez ◽  
Sara Ramírez-Bolaños ◽  
Lidia Robaina ◽  
Zaida Ortega
Keyword(s):  
Antioxidant Activity ◽  
Aqueous Ethanol ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Total Phenol Content ◽  
Optimal Conditions ◽  
Satisfactory Description ◽  
Optimized Conditions ◽  
By Products ◽  
Banana Crops

AbstractThe aim of this work is the optimization of phenolic compound extraction from three by-products of banana crops (rachis, discarded banana, and banana’s pseudostem pulp), as a way to valorize them through a green extraction process. The influence of the temperature and aqueous ethanol concentration (Et-OH) on extract properties (total phenol content (TPC) and antioxidant activity) was firstly analyzed. 78 ℃ and ethanol concentrations close to 50% yielded the best results for the three materials. The equations obtained by the response surface methodology gave a satisfactory description of the experimental data, allowing optimizing the extraction conditions. Under optimized conditions, time influence was then assessed, although this parameter seemed not influence results. Among the three by-products, rachis extract (60% Et-OH, 78 ℃, and 30 min) presented the highest TPC (796 mg gallic acid/100 g of dried material) and antioxidant activity (6.51 mg Trolox equivalents/g of dried material), followed by discarded banana, and pseudostem pulp. Under the optimal conditions, experiments were performed at a larger scale, allowing to determine the extraction yields (EY) and to characterize the extracts. The highest EY was obtained for the rachis (26%), but the extract with the highest activity was obtained for discarded banana (50% Et-OH, 78 ℃, and 60 min), which presented a TPC of 27.26 mg/g extract corresponding to 54.59 mg Trolox equivalents/g extract. This study contributes to the valorization of banana crops residues as a source of polyphenolic compounds with bioactive functions that can be extracted under economic extraction conditions. Graphical abstract

scholarly journals Optimization of Betalain Pigments Extraction Using Beetroot by-Products as a Valuable Source

Inventions ◽  
2021 ◽  
Vol 6 (3) ◽  
pp. 50
Author(s):  
Silvia Lazăr (Mistrianu) ◽  
Oana Emilia Constantin ◽  
Nicoleta Stănciuc ◽  
Iuliana Aprodu ◽  
Constantin Croitoru ◽  
...  
Keyword(s):  
Citric Acid ◽  
Acid Concentration ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Extraction Time ◽  
Quadratic Model ◽  
Citric Acid Concentration ◽  
Operating Variables ◽  
Conventional Solvent Extraction ◽  
Optimized Conditions

(1) Background: This study is designed to extract the bioactive compounds from beetroot peel for future use in the food industry. (2) Methods: Spectrophotometry techniques analyzed the effect of conventional solvent extraction on betalains and polyphenolic compounds from beetroot peels. Several treatments by varying for factors (ethanol and citric acid concentration, temperature, and time) were applied to the beetroot peel samples. A Central Composite Design (CCD) has been used to investigate the effect of the extraction parameters on the extraction steps and optimize the betalains and total polyphenols extraction from beetroot. A quadratic model was suggested for all the parameters analyzed and used. (3) Results: The maximum and minimum variables investigated in the experimental plan in the coded form are citric acid concentration (0.10–1.5%), ethanol concentration (10–50%), operating temperature (20–60 °C), and extraction time (15–50 min). The experimental design revealed variation in betalain content ranging from 0.29 to 1.44 mg/g DW, and the yield of polyphenolic varied from 1.64 to 2.74 mg/g DW. The optimized conditions for the maximum recovery of betalains and phenols were citric acid concentration 1.5%, ethanol concentration 50%, temperature 52.52 °C, and extraction time 49.9 min. (4) Conclusions: Overall, it can be noted that the extraction process can be improved by adjusting operating variables in order to maximize the model responses.

scholarly journals Extraction Process of Polyphenols from Soybean (Glycine max L.) Sprouts: Optimization and Evaluation of Antioxidant Activity

Processes ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 489 ◽  
Author(s):  
Xuan Tien Le ◽  
Vo Luu Lan Vi ◽  
Tran Quoc Toan ◽  
Long Giang Bach ◽  
Tran Thanh Truc ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Concentration ◽  
Dry Weight ◽  
Extraction Process ◽  
Extraction Time ◽  
Extraction Temperature ◽  
Polyphenol Content ◽  
Experimental Conditions ◽  
Total Polyphenol ◽  
Total Polyphenol Content

This research aimed to optimize the total polyphenol content (TPC) extracted from soybean sprout powder under different experimental parameters, including ethanol concentration (60–100% v/v), extraction temperature (40–80 °C), extraction time (15–150 min), material:solvent ratio (1:4–1:10 g/mL), the number extraction cycles (1, 2 and 3 times), the age of sprout (0–7 days), and the used part of the sprout (cotyledon, hypocotyl, or radicle). The obtained results were used in response surface methodology, in combination with a central composite design, to model the total polyphenol content (TPC) with respect to three variables, including ethanol concentration, extraction temperature, and material:solvent ratio. The experimental conditions for optimal recovery of TPC consisted of ethanol concentration of 88% (v/v), extraction temperature of 59 °C, material:solvent ratio of 1:6.5 g/mL, extraction time of 60 min, and 2 cycles of maceration. In addition, for maximal TPC, the sprout should undergo the germination of 5 days and the radicle fraction should be used. Based on the suggested optimum conditions, the obtained and verified TPC was 19.801 mg genistein (GE)/g dry weight (d.w.). The obtained dried extract also exhibited low antioxidant activity.

Effect of Extraction Process on Extraction Yeild, Total Polyphenol Content and Antioxidant Activity of Jasminum Subtriplinerve

2019 ◽  
Vol 814 ◽  
pp. 527-531
Author(s):  
Trieu Tuan Anh ◽  
Luu Tu Hao ◽  
Long Giang Bach ◽  
Duy Chinh Nguyen ◽  
Tri Duc Lam
Keyword(s):  
Antioxidant Activity ◽  
Extraction Process ◽  
Extraction Yield ◽  
Total Phenolic ◽  
Extraction Temperature ◽  
Total Phenolic Compounds ◽  
Polyphenol Content ◽  
Total Polyphenol ◽  
Herbal Plants ◽  
Optimized Conditions

Jasminum Subtriplinerve Blume (Oleaceae) is herbal plants widely a tea for weight loss, stimulates milk glands. Extract product it easy used yet had little research. This study was carried out to evaluate the effect of extracting conditions such as water/material ratio, extraction temperature and extracting time on extracting yield, polyphenol content and antioxidant activity of J.subtriplinerve extract. The total phenolic compounds were determined according to the Folin–Ciocalteu method. Extraction yield (0.22g/100 g) was obtained at water/material ratio 15:1 (ml/g), 40°C and 4 hours extraction time. Under these optimized conditions, the polyphenol content of was 2640.4 μg/1g extract. And the extract can harvest 46.11 % of DPPH (30 μg/ mL) at 10 000 μg/ml concentration

Influence of the CO2 Quality in the Antioxidant Activity of Rosemary Extracts Dearomatized by Supercritical Fluid Extraction

2001 ◽  
Vol 7 (2) ◽  
pp. 177-182 ◽  
Author(s):  
E. Ibanez ◽  
S. Lopez-Sebastian ◽  
J. Fernandez ◽  
J. Tabera ◽  
J. M. Bueno ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Experimental Design ◽  
Supercritical Fluid Extraction ◽  
Supercritical Fluid ◽  
Sunflower Oil ◽  
Extraction Process ◽  
Taguchi Experimental Design ◽  
Optimal Conditions ◽  
Fluid Extraction

The effect of the CO2 quality (mainly related to CO2 content) in the antioxidant activity of rosemary extracts deodorized by using a supercritical fluid extraction process is analyzed. A Taguchi experimental design was used to study the influence of the CO2 quality on the antioxidant activity of the rosemary dearomatized extracts. The antioxidant activity of the rosemary extracts obtained in optimal conditions was tested with sunflower oil.

scholarly journals Valorization of Yarrow (Achillea millefolium L.) By-Product through Application of Subcritical Water Extraction

Molecules ◽  
2020 ◽  
Vol 25 (8) ◽  
pp. 1878
Author(s):  
Jelena Vladić ◽  
Martina Jakovljević ◽  
Maja Molnar ◽  
Senka Vidović ◽  
Milan Tomić ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
High Performance ◽  
Subcritical Water ◽  
Extraction Process ◽  
High Performance Liquid Chromatographic ◽  
Extraction Time ◽  
Achillea Millefolium ◽  
Subcritical Water Extraction ◽  
By Products

In the present study, valorization of yarrow (Achillea millefolium) by-product from the filter tea industry was investigated through the application of subcritical water for the extraction of bioactive compounds. The influence of different process parameters (temperature 120–200 °C, extraction time 10–30 min, and HCl concentration in extraction solvent 0–1.5%) on extract quality in terms of content of bioactive compounds and antioxidant activity was investigated. Optimal conditions of the extraction process (temperature 198 °C, extraction time 16.5 min, and without acidifer) were determined and, when applied, the most efficient exploitation of by-products is achieved, that is, attainment of extracts rich in total phenols and flavonoids and high antioxidant activity. In addition, by applying the high performance liquid chromatographic analysis, the content of chlorogenic acid was determined as well as the hydroxymethylfurfural content in obtained extracts. The results demonstrated that subcritical water can be successfully used for utilization of yarrow by-products for obtaining extracts rich in antioxidants.

Study on Extraction of Total Flavonoids from Licorice with Ultrasonic Assistance and Antioxidant Activity

2012 ◽  
Vol 550-553 ◽  
pp. 1629-1632 ◽  
Author(s):  
Yu Hong Zou ◽  
Qiu Xia Han ◽  
Lin Guo
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Free Radical Scavenger ◽  
Extraction Rate ◽  
Radical Scavenger ◽  
Total Flavonoids ◽  
Ultrasonic Power ◽  
Liquid Ratio ◽  
Solid Liquid

To optimize the extraction process of total flavonoids from RADIX RHIZOMA GLYCYRRHIZAE and Study on the Antioxidant Activity. Total flavonoids were extracted from RADIX RHIZOMA GLYCYRRHIZAE with ethanol by ultrasonic-assisted method, whose extraction process was optimized by orthogonal test design.The scavenging effect of pumpkin polysaccharide on OH and O2-were studied by salicylic acid and pyrogallic acid method. The optimum extraction process was as follows: ethanol concentration of 75%, solid-liquid ratio of 1:25,ultrasonic power of 350 W and ultrasonic duration of 25 min.Under the above conditions, the extraction rate of total flavonoids reached as high as 1.943%. The influencing order of each factor on extraction rate of polysaccharides was determined to be: ethanol concentration＞solid-liquid ratio＞ultrasonic power＞ultrasonic duration. When the solution concentration is 1.1296mg/ml, the scavenging rate of crude flavonoids on superoxide radical is 50%.Suggesting that it would be an effctive natural free radical scavenger. The study could provide a scientific basis for the further exploitation and utilization of RADIX RHIZOMA GLYCYRRHIZAE

scholarly journals Optimization of protein and tannin extraction in Moringa oleifera leaf as antioxidant source

Food Research ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 2224-2232
Author(s):  
R. Wahyuni ◽  
W. Wignyanto ◽  
S. Wijana ◽  
S. Sucipto
Keyword(s):  
Antioxidant Activity ◽  
Optimum Condition ◽  
Total Protein ◽  
Moringa Oleifera ◽  
Extraction Process ◽  
Extraction Temperature ◽  
Optimal Conditions ◽  
Surface Method ◽  
Two Factors ◽  
Tannin Extraction

Moringa oleifera contains high nutritional and bioactive compounds that have the potential as a source of antioxidants. The main objective of this study was to obtain optimal conditions in the extraction process of Moringa leaf, maintain protein and antioxidant activity, and reduce tannin. It is carried out through the response surface method which consists of two factors. The first factor (X1) was the extraction temperature (°C) which contains three levels, namely 70, 80, and 90°C. The second factor (X2) was time (mins) consisting of three levels, namely 5, 10, and 15 mins. The parameters in this study were total protein, antioxidant activity, and total tannin. The results revealed that the optimum condition for Moringa leaf extraction is found to be temperature 80.54°C and a time of 12.19 mins. In that treatment, the total protein is 17.4594%, antioxidant activity is up to 10.2629 µg/mL, and tannin is 7.853% with the desirability of 0.792 or 79.2%.

scholarly journals The production of cellulase from the waste tobacco residues remaining after polyphenols and nicotine extraction and bacterial pre-treatment

2019 ◽  
Vol 84 (2) ◽  
pp. 129-140 ◽  
Author(s):  
Aneta Buntic ◽  
Olivera Stajkovic-Srbinovic ◽  
Dusica Delic ◽  
Suzana Dimitrijevic-Brankovic ◽  
Marija Milic
Keyword(s):  
Value Added ◽  
Extraction Process ◽  
Cellulase Production ◽  
Optimal Conditions ◽  
Bacterial Fermentation ◽  
Solid Ratio ◽  
Pre Treatment ◽  
By Products ◽  
Disposal Problem ◽  
Tobacco Waste

Agricultural by-products are generated in large amounts in various industries, creating a serious disposal problem. Valorisation of tobacco waste for the extraction of value-added compounds and the production of enzymes could reduce both the problems of its disposal and the costs of cellulase production. Hitherto, there have been no reported studies concerning the utilization of tobacco residues (after extraction of polyphenols and nicotine, and fermentation pre-treatment by Streptomyces fulvissimus CKS7) for the production of cellulase (CMCase and ?vicelase) by Paenibacillus chitinolyticus CKS1. The optimal conditions for the polyphenols and nicotine extraction process were obtained using the response surface methodology: 60 s extraction time in water and 30 mL g-1 liquid/solid ratio. After the applied bacterial fermentation as a pre-treatment of tobacco residues, using Paenibacillus species, the extraction of polyphenols decreased by up to 10 %, while the extraction of nicotine increased by up to 35 %. Afterward, the maximum of cellulase activities (CMCase of 0.878 U g-1 and avicelase of 1.417 U g-1) were achieved using of the strain CKS1.

scholarly journals Optimization of the Ocimum basilicum L. extraction process regarding the antioxidant activity

2012 ◽  
pp. 315-323 ◽  
Author(s):  
Senka Vidovic ◽  
Zoran Zekovic ◽  
Zika Lepojevic ◽  
Marija Radojkovic ◽  
Stela Jokic ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Ethanol Concentration ◽  
Extraction Process ◽  
Ocimum Basilicum ◽  
Dry Extract ◽  
Extraction Solvent ◽  
Ic50 Value ◽  
Total Flavonoids Content ◽  
Optimal Values ◽  
Input Variables

The levels of input variables (temperature and extraction solvent) that optimize a particular response (total phenols content, total flavonoids content and antioxidant activity) of the Ocimum basilicum L. extraction process were determined by the response surface methodology (RSM). The influence of theextraction temperature on extraction process was investigated in the range from 33.8?C to 76.2?C, as well as of extraction solvent ethanol, in the range of concentrations from 21.7% to 78.3%. For the preparation of basil dry extract, characterized with minimal IC50 value, the calculated optimal values of temperature and ethanol concentration were: 75.33?C and 73.66% (w/w).

Extraction Process Optimization of Endo-Polysaccharides from Phellinus igniarius

2014 ◽  
Vol 881-883 ◽  
pp. 347-350
Author(s):  
Yan Xu ◽  
Hui Cao ◽  
Shuang Shuang Gu ◽  
Sha Sha Wang ◽  
Jun Wang ◽  
...  
Keyword(s):  
Trichloroacetic Acid ◽  
Ethanol Concentration ◽  
Removal Rate ◽  
Extraction Process ◽  
Extraction Time ◽  
Extraction Temperature ◽  
Optimal Conditions ◽  
Phellinus Igniarius ◽  
Maximal Yield ◽  
Final Ethanol Concentration

Polysaccharides ofPhellinus igniariushave remarkable bioactivities and attracted considerable attention. In this study, extraction process of endo-polysaccharides fromP. igniariuwas investigated. The extraction conditions including ratio of sporocarp to water, extraction time, extraction temperature, extraction times were optimized. The experimental results indicated that the maximal yield of endo-polysaccharides fromP. igniariuwas 2.93 %, and the optimal conditions were as follows: ratio of sporocarp to water 1:30, extraction time 2 h, extraction temperature 90 °C, extraction twice. The best final ethanol concentration was 80 %. In addition, protein removal rate could reach 90.6 % using trichloroacetic acid method in extracting polysaccharides process.

Sign in / Sign up

Export Citation Format

Share Document