Decreased sulforaphene concentration and reduced myrosinase activity of radish (Raphanus sativus L.) root during cold storage

Lim, Sooyeon; Lee, Eun Jin; Kim, Jongkee

doi:10.1016/j.postharvbio.2014.10.007

Cited by 35 publications

(23 citation statements)

References 53 publications

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“…From these results, we clearly confirmed the reduction of SFE concentrations in radish roots during cold storage after harvest. Similar results were reported by Lim et al (2015), who confirmed that there was a 39% reduction in the harvest SFE concentrations in the 'Chungwoon plus' and 28% in the 'Taebaek' radish roots for 8 weeks of cold storage. The chemical structure of RH is very unstable and easily degraded with 30 min after exposure to an aqueous solution, whereas SFE stably remained for 24 h (Scholl et al, 2011).…”

Section: Itc Concentration During Cold Storagesupporting

confidence: 89%

“…In our previous study (Lim, Lee, & Kim, 2015), an over 35% reduction in SFE in radish roots was observed during cold storage for 8 weeks. In this study, we first tried to clear up the cause of ITC reduction of harvested radish roots based on the G-M system.…”

Section: Introductionmentioning

confidence: 74%

“…At the end of the storage period, myrosinase activity has been reduced by about 20% of the initial activity level in all radish cultivars. Lim et al (2015) reported that there was a 13% reduction in the myrosinase activity in the 'Chungwoon plus' and 15% in the 'Taebaek' radish roots for 8 weeks of cold storage. A decrease of myrosinase activity might be associated with the postharvest senescence of radish roots.…”

Section: Myrosinase Activity During Cold Storagementioning

confidence: 99%

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The mechanism of deterioration of the glucosinolate-myrosynase system in radish roots during cold storage after harvest

et al. 2017

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The hydrolysis of glucosinolates (GSLs) by myrosinase yields varieties of degradation products including isothiocyanates (ITCs). This process is controlled by the glucosinolate-myrosinase (G-M) system. The major ITCs in radish roots are raphasatin and sulforaphene (SFE), and the levels of these compounds decrease during storage after harvest. We investigated the G-M system to understand the mechanism behind the decrease in the ITCs in radish roots. Six varieties of radish roots were stored for 8weeks at 0-1.5°C. The concentrations of GSLs (glucoraphasatin and glucoraphenin) were maintained at harvest levels without significant changes during the storage period. However, SFE concentration and myrosinase activity remarkably decreased for 8weeks. Pearson correlation analysis between ITCs, GSLs, and myrosinase activity showed that a decrease of SFE during storage had a positive correlation with a decrease in myrosinase activity, which resulted from a decrease of ascorbic acid but also a decrease of myrosinase activity-related gene expressions.

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Section: Itc Concentration During Cold Storagesupporting

confidence: 89%

Section: Introductionmentioning

confidence: 74%

Section: Myrosinase Activity During Cold Storagementioning

confidence: 99%

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The mechanism of deterioration of the glucosinolate-myrosynase system in radish roots during cold storage after harvest

et al. 2017

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“…Lim et al . () reported for radish roots that the isothiocyanates formed from Gls inhibited the myrosinase enzyme. The linear correlation coefficients ( R 2 ) between total Gls and MYR activity for the refrigeration, shade and sun‐exposure treatments corresponded to 0.57, 0.28 and 0.39 respectively.…”

Section: Resultsmentioning

confidence: 98%

Postharvest storage and cooking techniques affect the stability of glucosinolates and myrosinase activity of Andean mashua tubers (Tropaeolum tuberosum)

Campos

Aguilar‐Galvez

García‐Ríos

et al. 2019

Int J of Food Sci Tech

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Summary The identification and quantification of Glucosinolates (Gls) via UPLC® MS‐MS/PDA/qToF in ten mashua cultivars was carried out. Gls total contents were within the 4.9–54.2 μmol g−1 dry matter range, of which 96–99% corresponded to glucoaubrietin. Other less abundant Gls were glucotropaeolin and tentatively two isomers of hydroxybenzyl Gls. Postharvest refrigeration and shade storage conditions increased the content of Gls up to day 6 in 39.7% and 51.5% respectively. Sun exposure increased the Gls content in 40% up to day 3 but from day 6 considerable losses were attained (92% at day 15). Low correlation levels (R2) between the Gls and myrosinase (MYR) activity of 0.57, 0.28 and 0.39 for the refrigeration, shade and sun exposure treatments were obtained. The cooking regimes tested, boiling, microwaving and baking totally inactivated MYR without affecting the Gls content.

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“…Radish leaves and roots have been used in various parts of the world to treat cancer and it simultaneously act as antiviral and antimicrobial agents [1]. Radish leaves are rich source of glucosinolates (GSLs) [4,5]. Myrosinase is the name of the enzyme which has the function to produce isothiocyanates from glucosinolates in the presence of moisture (hydrolysis process) which is responsible for the pungency, odor and hot biting flavor in radish leaves.…”

Section: Introductionmentioning

confidence: 99%

Adsorption Studies of Radish Leaf Powder

Prasad

2016

MATEC Web of Conferences

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Abstract-Radish leaves (Raphanus sativus) powder fractions was subjected to moisture adsorption isotherms at different isothermal temperature conditions from 15-45 o C with an equal interval of 10 o C. The sorption data obtained in gravimetric static method under 0.11-0.90 water activity conditions were subjected for sorption isotherms and found to be typical sigmoid trend. Experimental data were assessed for the applicability in the prediction through sorption models fitting and found that Polynomial and GAB equations performed well over all fitted models in describing equilibrium moisture content -equilibrium relative humidity (EMC-ERH) relationships for shelf stable dehydrated radish leaf powder, over the entire range of temperatures condition under study. The net isosteric heat of sorption, differential entropy and free energy were determined at different temperatures and their dependence was seen with respect to equilibrium moisture content.

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Decreased sulforaphene concentration and reduced myrosinase activity of radish (Raphanus sativus L.) root during cold storage

Cited by 35 publications

References 53 publications

The mechanism of deterioration of the glucosinolate-myrosynase system in radish roots during cold storage after harvest

The mechanism of deterioration of the glucosinolate-myrosynase system in radish roots during cold storage after harvest

Postharvest storage and cooking techniques affect the stability of glucosinolates and myrosinase activity of Andean mashua tubers (Tropaeolum tuberosum)

Adsorption Studies of Radish Leaf Powder

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