Microwave-assisted extraction of phenolics from pomegranate peels: Optimization, kinetics, and comparison with ultrasounds extraction

Kaderides, Kyriakos; Papaoikonomou, Lygeri; Serafim, Melania; Goula, Athanasia M.

doi:10.1016/j.cep.2019.01.006

Cited by 256 publications

(112 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…After the same period, the UAE method yielded phenolic recovery equal to 14.5 mg of GAE/g DW, which is approximately 10-16 times lower than the TPCs of those reported in Figure 1. Recently, Kaderides et al 2019 [42], exploiting the action of ultrasound and microwave to extract the phenolic compounds from pomegranate peels, described TPCs equal to 119.82 mg GAE/g dry peel and 199.4 mg GAE/g dry peel, respectively, which are more in accordance with the values described in this study (148-237 mg GAE/g DW). Figure 2 reports the free EA and ET amounts of the peel aqueous extracts (D and PUAE) belonging to the two different cultivars investigated.…”

Section: Resultssupporting

confidence: 90%

“…In particular, for both cultivars, the decoction (AK_D and WO_D) showed higher EA and lower ET contents compared to the PUAE extracts (AK_PUAE and WO_PUAE). The PUAE extract, according to several other green strategies reported in the literature [42][43][44], confirms its superiority in terms of ET recovery, even if the simplest decoction is endowed with a higher free EA content, probably due to the highest boiling temperature, which allows the partial hydrolysis of ETs with the consequent release of the common aglycone (EA) and some sugar moieties [36]. The aim of this investigation was the comparison between the innovative PUAE and the traditional decoction.…”

Section: Resultsmentioning

confidence: 66%

See 1 more Smart Citation

Traditional Decoction and PUAE Aqueous Extracts of Pomegranate Peels as Potential Low-Cost Anti-Tyrosinase Ingredients

et al. 2020

View full text Add to dashboard Cite

The aim of the study is to evaluate the anti-tyrosinase activity of different aqueous extracts obtained from pomegranate juice processing by-products. External pomegranate peels of two certified cultivars (Akko and Wonderful), were extracted using only water as the extraction solvent. A traditional decoction and a pulsed ultrasound-assisted extraction (PUAE), both 10 min long, were performed and compared. All the aqueous extracts proved to be rich in bioactive compounds. In particular, the total phenolic content (TPC) ranged from 148 to 237 mg gallic acid equivalent (GAE)/g of dried peels (DW), the radical-scavenging ability (RSA) ranged from 307 to 472 mg ascorbic acid equivalent (AAE)/g DW, the free ellagic acid content (EA) ranged from 49 to 94 µg/mL, and the ellagitannins (ETs) ranged from 242 to 340 µg/mL. For both cultivars, PUAE extracts had higher ET content and a lower EC50, while the decoctions had slightly higher TPC, RSA, and free EA amounts. Principal component analysis (PCA) highlighted the direct correlation between the ET content and the tyrosinase enzyme inhibition (lower values of EC50). These findings suggest the potential use of both these natural extracts as low-cost lightening and/or anti-browning ingredients exploitable in several formulations (e.g., cosmetics) or extemporarily usable.

show abstract

Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 66%

Traditional Decoction and PUAE Aqueous Extracts of Pomegranate Peels as Potential Low-Cost Anti-Tyrosinase Ingredients

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The TPC was determined using a modified method (Kaderides, Papaoikonomou, Sera, & Goula, 2019). The absorbance was read at 760 nm using a UV spectrometer (Thermo Spectronic).…”

Section: Total Phenolic Contentmentioning

confidence: 99%

Modeling of drying and rehydration kinetics ofRosa pimpinellifoliafruits: Toward formulation and optimization of a new tea with high antioxidant properties

Pashazadeh

Zannou

Koca

2020

J Food Process Engineering

View full text Add to dashboard Cite

Rosa pimpinellifolia is the black of rosehips having many uses in the food and pharmaceutical industries. The modeling of drying and rehydration kinetics of the fruits as well as the optimization of preparation conditions of a new tea was investigated. Empirical models were applied to predict the drying and rehydration behaviors of R. pimpinellifolia fruits. Response surface methodology was used to optimize the tea preparation together with antioxidant properties. The analysis of drying behavior of the fruits revealed that they dried faster at higher temperatures (70-90 C/1.75 m/s); however, the antioxidant properties were most preserved at 70 C. Midilli model was the best-fitted model describing the drying kinetic of the fruits. The rehydration capacity was more effective at 60 C compared to 20 and 40 C. Peleg, Vega-Gálvez, and Weibull models depicted better the rehydration behavior of these fruits. The teas were prepared with the fruits dried that 70 C/1.75 m/s since they displayed the highest antioxidant properties. The optimum conditions were 15 min decoction time and 1.5 g solid-to-liquid ratio. Higher antioxidant properties were observed in R. pimpinellifolia tea when compared to fresh and dried fruit. These findings showed that R. pimpinellifolia fruits are valuables as an industrial product. Practical Applications The drying conditions to have a dried fruit with high antioxidant properties were determined. The dried food is afforded in off-seasons. Mathematical models were successfully applied to describe the drying and rehydration kinetics of R. pimpinellifolia. Midilli model was the most fitted model to predict the drying kinetics of R. pimpinellifolia. Peleg, Vega-Gálvez, and Weibull models depicted better the rehydration kinetics of R. pimpinellifolia at 20, 40, and 60 C. A new fruit tea was formulated from the dried fruits. This tea is a functional food having great antioxidant properties. 1 | INTRODUCTION In these last decades, the commodities with great industrial potentials have shown a special interest from scientists because of their economic and functional advantages. Fruits and vegetables are undergoing tremendous scientific investigations to reveal their functional properties, to control their perishability and to evaluate their affordability and acceptance of consumers. The genus Rosa of the Rosaceae family counts more than 150 species which are currently subjected to many scientific research studies. These species are overall distributed in Europe,

show abstract

“…The extraction of value-added chemicals and compounds from pomegranate peels has been recently reported by some authors [24][25][26][27]. In addition, the use of pomegranate peel, seed oil and seed extract in film formulations has been investigated [28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Gelatin-Based Antimicrobial Films Incorporating Pomegranate (Punica granatum L.) Seed Juice by-Product

et al. 2019

View full text Add to dashboard Cite

Pomegranate (Punica granatum L.) seed juice by-product (PSP) was added as reinforcing and antimicrobial agent to fish gelatin (FG) films as a promising eco-friendly active material for food packaging applications. A complete linkage analysis of polysaccharides in PSP showed xylan and cellulose as main components. This residue showed also high total phenolic content and antioxidant activity. Three formulations were processed by adding PSP to FG (0, 10, 30 wt. %) by the casting technique, showing films with 10 wt. % of PSP the best performance. The addition of PSP decreased elongation at break and increased stiffness in the FG films, particularly for 30 wt. % loading. A good compatibility between FG and PSP was observed by SEM. No significant (p < 0.05) differences were obtained for barrier properties to oxygen and water vapour permeability compared to the control with the incorporation of PSP, whereas water resistance considerably increased and transparency values decreased (p < 0.05). High thermal stability of films and inhibition against S. aureus were observed. The addition of PSP at 10 wt. % into FG was shown as a potential strategy to maintain the integrity of the material and protect food against lipid oxidation, reducing huge amounts of pomegranate and fish wastes.

show abstract

Microwave-assisted extraction of phenolics from pomegranate peels: Optimization, kinetics, and comparison with ultrasounds extraction

Cited by 256 publications

References 72 publications

Traditional Decoction and PUAE Aqueous Extracts of Pomegranate Peels as Potential Low-Cost Anti-Tyrosinase Ingredients

Traditional Decoction and PUAE Aqueous Extracts of Pomegranate Peels as Potential Low-Cost Anti-Tyrosinase Ingredients

Modeling of drying and rehydration kinetics ofRosa pimpinellifoliafruits: Toward formulation and optimization of a new tea with high antioxidant properties

Gelatin-Based Antimicrobial Films Incorporating Pomegranate (Punica granatum L.) Seed Juice by-Product

Contact Info

Product

Resources

About