Application of response surface methodology for optimization of ultrasound‐assisted solid‐liquid extraction of phenolic compounds from Cenostigma macrophyllum

2020 ◽  
Vol 34 (10) ◽  
Author(s):  
Bruno Oliveira Moreira ◽  
Marco Roberto Dourado Barbosa Filho ◽  
Anaildes Lago Carvalho ◽  
Douglas Gonçalves Silva ◽  
Mariluze Peixoto Cruz ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Phenolic Compounds ◽  
Response Surface ◽  
Liquid Extraction ◽  
Ultrasound Assisted ◽  
Solid Liquid Extraction ◽  
Solid Liquid

Author response for "Application of response surface methodology for optimization of ultrasound‐assisted solid‐liquid extraction of phenolic compounds from Cenostigma macrophyllum"

2020 ◽  
Author(s):  
Bruno Oliveira Moreira ◽  
Marco Roberto Dourado Barbosa Filho ◽  
Anaildes Lago Carvalho ◽  
Douglas Gonçalves Silva ◽  
Mariluze Peixoto Cruz ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Phenolic Compounds ◽  
Response Surface ◽  
Liquid Extraction ◽  
Author Response ◽  
Ultrasound Assisted ◽  
Solid Liquid Extraction ◽  
Solid Liquid

scholarly journals OPTIMIZATION OF BREWING WASTE’S (TRUB) PHENOLIC COMPOUNDS EXTRACTION BY ULTRASOUND ASSISTED USING RESPONSE SURFACE METHODOLOGY

Química Nova ◽  
2020 ◽  
Author(s):  
Bianca Gandolpho ◽  
Aline Almeida ◽  
Gabriel Gandolpho ◽  
Daniele Freitas ◽  
Otávio Gasparini ◽  
...  
Keyword(s):  
Response Surface Methodology ◽  
Phenolic Compounds ◽  
Response Surface ◽  
Ethanol Concentration ◽  
Operating Conditions ◽  
Extraction Temperature ◽  
Liquid Ratio ◽  
Extraction Technology ◽  
Ultrasound Assisted ◽  
Solid Liquid

The brewing waste, also known as trub, is an abundant by-product of the brewing industry. Such material presents high levels of phenolic compounds, which promote antioxidant, antimicrobial and antifungal effects, turning the trub economically attractive. In this study, the trub’s phenolic compounds were extracted by ultrasound-assisted extraction technology. Such experiments were conducted according to a central composite rotatable design (CCRD), with the evaluated parameters being ethanol concentration, solid-liquid ratio and extraction temperature. Response surface methodology (RSM) described the effect of process’ variables through second order polynomial models, adjusted appropriately for such analysis, and optimized the operating conditions, aiming to obtain the maximum extraction of phenolic compounds through the proposed technique. The extraction’s optimal conditions for the evaluated variables were ethanol concentration of 58%, solid-liquid ratio of 1 g per 32 mL, and extraction temperature of 36 ºC, during a 30 minute process. Considering such experimental conditions, the total amount of phenolic compounds was equal to 7.23 mg of gallic acid g-1 trub, indicating that a great concentration of phenolic compounds can be extracted from this material through the proposed technique. Thus, this indicates that trub might be a promising by-product that can be used in different industrial fields.

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