Quality Characteristics and Antioxidant Activities of Strawberries according to Various Extraction Methods

Bae, Mi-Jeong; Kim, Eu Na; Kyeong, Choi Hyeon; Byun, Mi Soon; Chung, Kang-Hyun; Yoon, Jin A; An, Jeung Hee

doi:10.3746/jkfn.2019.48.7.728

Cited by 10 publications

(2 citation statements)

References 42 publications

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“…Results revealed that the average recovery rate of ellagic are 52.32 and 39.11 mg CE/100 g, lower than ours. Bae et al (2019) have reported that total flavonoid content in 'Sulhyang' is 546.12 mg CHE/100 g sample, same as 'Josaenghongsim' . Kim et al (2018) have determined antioxidant activities of various berries and reported that total flavonoid contents in raspberry and wild raspberry are 731.08 and 362.41 mg QE/100 g FW, respectively, higher than our results.…”

Section: Methods Validationmentioning

confidence: 87%

Assessment of validation and antioxidant activities of novel 12 Korean strawberry cultivars

Lee¹,

Cho²,

Park³

et al. 2022

Food Sci. Technol

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In this study, antioxidant activities of extracts of 12 Korean strawberry cultivars were evaluated and validation of an analytical method for ellagic acid, a marker compound, was carried out. Cultivar 'Josaenghongshim' had the highest total polyphenol and flavonoid contents. In addition, cultivar 'Josaenghongshim' had the highest value and cultivar 'Seolhyang' showing the highest activity. Ellagic acid contents of 'Suhong' , 'Okme' , and 'Dahong' cultivars were the highest ellagic acid content. Correlation coefficient of the calibration curve was 0.9999, showing very high linearity. The HPLC-DAD method for the quantitation of ellagic acid content showed high linearity at various concentration ranges, with a limit of detection of 2.35 μg/mL. The limit of quantification was 7.13 μg/mL. Relative standard deviations from intra-and inter-day precision were less than 5.13%. Recovery rates of ellagic acid at 10, 50, and 100 μg/mL, respectively, were 99.0-100.1% with RSD values less than 5.30%. These results provide viable information for the validation of antioxidant capacities of 12 cultivars of Korean strawberries.

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Section: Methods Validationmentioning

confidence: 87%

Assessment of validation and antioxidant activities of novel 12 Korean strawberry cultivars

Lee¹,

Cho²,

Park³

et al. 2022

Food Sci. Technol

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show abstract

“…In the past, the most used strawberry cultivation methods have included semi-forced cultivation, which means transplanting runner plants 2 of 12 in October and starting the harvesting the following February. However, now, strawberries are cultivated by forced cultivation, which means transplanting runner plants in September and starting the harvesting in December [2][3][4]. In the Republic of Korea, forced cultivation is the most used method because of the increased productivity and economic advantages of early harvests [5].…”

Section: Introductionmentioning

confidence: 99%

Acceleration of Flower Bud Differentiation of Runner Plants in “Maehyang” Strawberries Using Nutrient Solution Resupply during the Nursery Period

et al. 2020

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The forced cultivation of strawberries (Fragaria × ananassa Duch.) requires fast flower bud differentiation. Using temporary nutrient-withholding periods is a common management practice for inducing flower bud differentiation at strawberry nurseries in the Republic of Korea. After the temporary nutrient-withholding period, nutrient solution resupply can advance both flower bud growth and fruit yield. This study aims to determine the optimal nutrient solution resupply period with anatomical analysis in order to find a method for fast flower bud differentiation in the early harvest period. Here, the runner plants were divided into 5 groups, each receiving a treatment period of watering (W) and nutrient solution (N) (W40 + N0 (control), W30 + N10, W20 + N20, W10 + N30, and W0 + N40; each number represents the days of the treatment period). The nutrient solution treatments were supplied using a strawberry nutrient solution developed by Gyeongsangnam-do Agricultural Research and Extension. Rapid flower bud differentiation was found for W20 + N20 via anatomical analysis. When the temporary nutrient-withholding period was decreased, the T-N (total nitrogen), P, K, and S concentrations showed a tendency to increase. The C/N ratio showed a tendency to decrease when the nutrient solution resupply period was increased. The W20 + N20 group showed faster flower bud development than the other groups at 10 days before transplanting and on the day of transplanting (2.2 and 5.5), 6 days in a primary cluster budding ratio, and 16 days in flowering plants. No differences in fruit characteristics were observed for the different treatments. In conclusion, the W20 + N20 treatment, which maintains fast flowering, seems to be appropriate for nutrient solution resupply treatment for “Maehyang” strawberries during the nursery period.

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Antioxidant, antidiabetic and anti-inflammatory activities of bitter melon extracts obtained by ultrasonic-assisted extraction

Lee¹,

Yoon²

2022

Korean J. Food Preserv.

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We obtained polyphonol extracts from bitter melon containing various bioactive compounds to improve applicability as functional food materials. The total phenolic content (TPC), antioxidant, antidiabetic, and anti-inflammatory activities of bitter melon extracts obtained using various extraction methods were compared. The extracts obtained using ethanol as the solvent had a higher TPC than extracts obtained using water. The extracts obtained using ethanol also had high antioxidant, antidiabetic, and anti-inflammatory activities when performed using ultrasonic-assisted extraction (UE) with ethanol. The extract obtained using probe type-UE with ethanol (PUE-E) exhibited α-amylase and α-glucosidase inhibitory activity levels corresponding to 90% or more of acarbose (a diabetes treatment). An extract obtained using a bath type-UE with ethanol (BUE-E) exhibited high NO inhibitory activity at all concentrations. Therefore, UE with ethanol is a very effective method for recovering polyphenol extracts from bitter melon with antioxidant, antidiabetic, and anti-inflammatory activities. In addition, the polyphenol extracts obtained from bitter melon by UE with ethanol (especially PUE-E and BUE-E) have a high application potential as functional food materials.

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Quality Characteristics and Antioxidant Activities of Strawberries according to Various Extraction Methods

Cited by 10 publications

References 42 publications

Assessment of validation and antioxidant activities of novel 12 Korean strawberry cultivars

Assessment of validation and antioxidant activities of novel 12 Korean strawberry cultivars

Acceleration of Flower Bud Differentiation of Runner Plants in “Maehyang” Strawberries Using Nutrient Solution Resupply during the Nursery Period

Antioxidant, antidiabetic and anti-inflammatory activities of bitter melon extracts obtained by ultrasonic-assisted extraction

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