Improvement of polyphenol extraction from grape skin by pulse electric field

Takaki, Koichi; Hatayama, H.; Shoji, K.; Kawamura, Yukio

doi:10.1109/ppc.2011.6191596

Cited by 9 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PEF-assisted extraction of polyphenol from fresh tea leaves at an electric field intensity of 1.00 kV/cm with 100 pulses of 100 s pulse length and 5 s pulse repetition resulted in an approximately two times higher extraction rate without significant alteration of the polyphenol profile [ 74 ]. For extracting intracellular components from microalgae [ 83 ], red beetroot pigment [ 84 ], anthocyanins from purple-fleshed potato [ 85 ], phenolic compounds from Merlot grapes [ 86 ], polyphenols from grape skin [ 87 ], and many more, PEF has shown beneficial results. In the case of cannabis, application of PEF for drying or extraction is rarely noticed.…”

Section: Postharvest Operations Involved In Cannabismentioning

confidence: 99%

Postharvest Operations of Cannabis and Their Effect on Cannabinoid Content: A Review

et al. 2022

View full text Add to dashboard Cite

In recent years, cannabis (Cannabis sativa L.) has been legalized by many countries for production, processing, and use considering its tremendous medical and industrial applications. Cannabis contains more than a hundred biomolecules (cannabinoids) which have the potentiality to cure different chronic diseases. After harvesting, cannabis undergoes different postharvest operations including drying, curing, storage, etc. Presently, the cannabis industry relies on different traditional postharvest operations, which may result in an inconsistent quality of products. In this review, we aimed to describe the biosynthesis process of major cannabinoids, postharvest operations used by the cannabis industry, and the consequences of postharvest operations on the cannabinoid profile. As drying is the most important post-harvest operation of cannabis, the attributes associated with drying (water activity, equilibrium moisture content, sorption isotherms, etc.) and the significance of novel pre-treatments (microwave heating, cold plasma, ultrasound, pulse electric, irradiation, etc.) for improvement of the process are thoroughly discussed. Additionally, other operations, such as trimming, curing, packaging and storage, are discussed, and the effect of the different postharvest operations on the cannabinoid yield is summarized. A critical investigation of the factors involved in each postharvest operation is indeed key for obtaining quality products and for the sustainable development of the cannabis industry.

show abstract

Section: Postharvest Operations Involved In Cannabismentioning

confidence: 99%

Postharvest Operations of Cannabis and Their Effect on Cannabinoid Content: A Review

et al. 2022

View full text Add to dashboard Cite

show abstract

“…However, above this energy threshold, a negative effect of HVED is observed corresponding to the decrease of polyphenols content, probably due to their degradation (Boussetta et al 2011). Table 4 The increase in color, content of flavonols, and total phenolic of red wine from Cabernet Sauvignon grapes after application of PEF, enzymatic, and thermovinification treatment (Compiled from the data presented in El Darra et al 2016 HVED treatment (voltage from 30 to 60 kV, needles-to-plane electrode treatment chamber with a distance between electrodes of 1.0 cm) has been applied to suspension of grape skins in distilled water (Takaki et al 2011). The six-stage Blumlein-line was used to generate 140 ns width pulse voltage.…”

Section: Biorefinery Of Grape Wastementioning

confidence: 99%

Application of Pulsed Electric Energy for Grape Waste Biorefinery

Vorobiev¹,

Lebovka²

2016

Handbook of Electroporation

View full text Add to dashboard Cite

show abstract

“…Many studies have mentioned that the important conditions for improving the extraction efficiency of bioactive compounds, such as flavonoids from plant cells are the electric field strength and frequency. Takaki et al (2011) identified that the PEF treatment on grape peels induces permeabilization of the peels, thus it causes an increase of total polyphenols from 2.5 to 4.78 μmM gallic acid eq./100 g when the applied voltage of PEF was 30 to 60 kV at 5 pulses/s [ 22 ]. Moreover, Zderic et al (2013) obtained 27% of polyphenol extraction yield when fresh tea leaves were treated with the PEF intensity of 0.9 kV/cm, while the yield was only 3% when the intensity was 0.1 kV/cm [ 23 ].…”

Section: Introductionmentioning

confidence: 99%

Improving the Extraction of Catechins of Green Tea (Camellia sinensis) by Subcritical Water Extraction (SWE) Combined with Pulsed Electric Field (PEF) or Intense Pulsed Light (IPL) Pretreatment

Shin

Kim

Chung

2021

Foods

View full text Add to dashboard Cite

The aim of this study was to find the optimum condition of pulsed electric field (PEF) and intense pulsed light (IPL) for the enhancement of subcritical water extraction (SWE), which is an eco-friendly extraction method, for extracting tea catechins from green tea leaves (Camellia sinensis). The leaves were treated with PEF under conditions of electric field strength (1, 2 and 3 kV/cm) during 60 s. Moreover, IPL was applied at various voltages (800, 1000, and 1200 V) for 60 s. The SWE was performed for 5 min at varying temperatures (110, 130, 150, 170, and 190 °C). The maximum yield of total catechin was 44.35 ± 2.00 mg/g dry green tea leaves at PEF treatment conditions of 2 kV/cm during 60 s, as well as the SWE temperature of 130 °C. In the case of IPL treatment, the largest amount of total catechin was 48.06 ± 5.03 mg/g dry green tea leaves at 800 V during 60 s when the extraction temperature was 130 °C. The total catechin content was increased by 15.43% for PEF and 25.09% for IPL compared to the value of untreated leaves. This study verified that PEF and IPL had a positive effect on the enhancement of tea catechins extraction from green tea leaves using SWE.

show abstract

Improvement of polyphenol extraction from grape skin by pulse electric field

Cited by 9 publications

References 7 publications

Postharvest Operations of Cannabis and Their Effect on Cannabinoid Content: A Review

Postharvest Operations of Cannabis and Their Effect on Cannabinoid Content: A Review

Application of Pulsed Electric Energy for Grape Waste Biorefinery

Improving the Extraction of Catechins of Green Tea (Camellia sinensis) by Subcritical Water Extraction (SWE) Combined with Pulsed Electric Field (PEF) or Intense Pulsed Light (IPL) Pretreatment

Contact Info

Product

Resources

About