Microwave reflux extraction—An alternative approach for phenolic-rich oleoresins extraction from functional plants

Olalere, Olusegun Abayomi; Gan, Chee-Yuen

doi:10.1016/b978-0-12-819848-3.00016-5

Cited by 4 publications

(6 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The air‐dried pods were ground into a fine powder and sieved into a particle size of 0.100 mm using a set of standard sieves. The size reduction provided a spread and larger surface area for the ionic conduction within the extraction medium 15 . A constant mass of 1 g was loaded into the microwave reactor containing 100 mL of 70% ethanol 16 .…”

Section: Methodsmentioning

confidence: 99%

“…The size reduction provided a spread and larger surface area for the ionic conduction within the extraction medium. 15 A constant mass of 1 g was loaded into the microwave reactor containing 100 mL of 70% ethanol. 16 The extract was prepared using the microwave extractor (Ethos Milestone, 25 Controls Drive, Shelton, CT 06484, USA) operated in a three-level temperature setting.…”

Section: Materials and Preparation Of C Nitida Extractsmentioning

confidence: 99%

“…The justification for the use of microwave reflux extraction in the total recovery of phenolic constituents is therefore largely due to the cooling effects of the reflux configuration which in‐turn mitigate the effect of superheating in the microwave oven 13,14 . This prevents the thermo‐chemical degradation of heat‐sensitive phenolic compounds in the extracts, as buttressed by Olalere et al 8 The microwave reflux extraction method, therefore, offers an advantage over the traditional method in terms of shorter extraction time, better yield, lower solvent consumption and high quality extracts 15 …”

Section: Introductionmentioning

confidence: 99%

“…13,14 This prevents the thermo-chemical degradation of heat-sensitive phenolic compounds in the extracts, as buttressed by Olalere et al 8 The microwave reflux extraction method, therefore, offers an advantage over the traditional method in terms of shorter extraction time, better yield, lower solvent consumption and high quality extracts. 15 While studies have been performed on the antioxidant and antimicrobial activity of C. nitida dried fruits using various traditional methods such as Soxhlet and maceration methods, 6 there is limited study on the optimisation of microwave-reflux extraction yields using the response surface methodology (RSM). The RSM was used for maximising the extraction yield as many parameters influence the optimum performance of microwave-reflux extraction.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Optimisation of microwave‐assisted extraction and functional elucidation of bioactive compounds from Cola nitida pod

Olalere

Gan

Akintomiwa

et al. 2021

Phytochemical Analysis

Self Cite

View full text Add to dashboard Cite

Introduction The quality characteristics and stability of phenolic by‐products from Cola nitida wastes are critical factors for drug formulation and food nutraceutical applications. Objectives In this study, the effect of electromagnetic‐based microwave‐reflux extraction on the total phenolic content, antioxidant capacity, morphological characteristics, physisorption and chromatographic phenolic profiles were successfully investigated. These physicochemical analyses are often employed in the standardisation of dried herbal and food nutraceutical products. Material and methods In this study, the electromagnetic‐based extraction process was optimised using the Box–Behnken design. The oleoresin bio‐products were subsequently characterised to determine the total phenolic content, morphological and microstructural degradation. These analyses were conducted to elucidate the effect of the microwave heating on the C. nitida pod powder. Results From the predicted response, the optimal percentage yield was achieved at 26.20% under 5.39 min of irradiation time, 440 W microwave power and oven temperature of 55°C. Moreover, the rapid estimation of the phenolic content and antioxidant capacity were recorded at 124.84 ± 0.064 mg gallic acid equivalent (GAE)/g dry weight (d.w.) and 6.93 ± 0.34 μg/mL, respectively. The physicochemical characterisation results from the Fourier‐transform infrared spectroscopy, field emission scanning electron microscopy and physisorption analyses showed remarkable changes in the micro‐surface area (13.66%) characteristics. Conclusion The recorded optimal conditions established a basis for future scale‐up of microwave extraction parameters with a potential for maximum yield. The physiochemical characterisation revealed the functional characteristics of C. nitida and their tolerance to microwave heating.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Materials and Preparation Of C Nitida Extractsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Optimisation of microwave‐assisted extraction and functional elucidation of bioactive compounds from Cola nitida pod

Olalere

Gan

Akintomiwa

et al. 2021

Phytochemical Analysis

Self Cite

View full text Add to dashboard Cite

show abstract

“…It provides the prospect of shorter processing times, a better degree of selectivity, lower and greener energy use for producing high-quality medicinal products. Ionic conduction and dipole rotation have been identified as critical fundamental phenomena underlying microwave processing technology (1). In far too many cases, these two phenomena occur concurrently, with ionic conduction providing a substantial opposition to ionic flow.…”

mentioning

confidence: 99%

Biopharmaceutical Application of Microwave Technology and the Scalability Concerns

Olalere¹,

Gan²

2022

Jundishapur J Nat Pharm Prod

View full text Add to dashboard Cite

Essential Oils: Sustainable Extraction Techniques and Nutraceuticals Perspectives

Olalere,

Gan,

Taiwo

et al. 2024

Methods and Protocols in Food Science

View full text Add to dashboard Cite

Microwave reflux extraction—An alternative approach for phenolic-rich oleoresins extraction from functional plants

Cited by 4 publications

References 46 publications

Optimisation of microwave‐assisted extraction and functional elucidation of bioactive compounds from Cola nitida pod

Optimisation of microwave‐assisted extraction and functional elucidation of bioactive compounds from Cola nitida pod

Biopharmaceutical Application of Microwave Technology and the Scalability Concerns

Essential Oils: Sustainable Extraction Techniques and Nutraceuticals Perspectives

Contact Info

Product

Resources

About