UV-B-induced changes of volatile metabolites and phenolic compounds in blueberries (Vaccinium corymbosum L.)

Eichholz, Ines; Huyskens-Keil, Susanne; Keller, Ariane; Ulrich, Detlef; Kroh, Lothar W.; Rohn, Sascha

doi:10.1016/j.foodchem.2010.10.071

Cited by 85 publications

(53 citation statements)

References 32 publications

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“…Mechanical damage, decay, and aging promote cell wall disruption releasing degradation enzymes such as polyphenol oxidase and ascorbate oxidase, which are responsible for the oxidation of ascorbic acid (MOKADY; COGAN; LIEBERMAN, 1984). Eichholz et al (2011) showed that the application of UV-C in blueberries resulted in a higher total phenolic content as compared to control fruits. Sun-dried gamma irradiated apricots showed enhanced capacity to retain high levels of ascorbic acid and antioxidant activity (measured by the method of β-carotene) as compared to control fruits, and the most effective dose was 2.5-3.0 kGy (HUSSAIN et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation

et al. 2013

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Section: Resultsmentioning

confidence: 99%

Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation

et al. 2013

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“…The stilbene content of Monastrell grapes irradiated with UV-C light was found to be higher than in control grapes and the final wine made from UV-C-irradiated grapes was about 2-and 1.5-fold enriched in resveratrol and piceatannol, respectively, compared with the control wine [2]. Postharvest treatments involving UV irradiation increased the level of trans-resveratrol in apples [50] and of volatile and non-volatile phenols in blueberries [51]. Cold stress in blood oranges induced transcriptomic modifications directed towards increased flavonoid biosynthesis [52].…”

Section: The Use Of Elicitorsmentioning

confidence: 99%

Elicitors: A Tool for Improving Fruit Phenolic Content

2013

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Fruits are one of the most important sources of polyphenols for humans, whether they are consumed fresh or as processed products. To improve the phenolic content of fruits, a novel field of interest is based on results obtained using elicitors, agrochemicals which were primarily designed to improve resistance to plant pathogens. Although elicitors do not kill pathogens, they trigger plant defense mechanisms, one of which is to increase the levels of phenolic compounds. Therefore, their application not only allows us to control plant disease but also to increase the phenolic content of plant foodstuffs. Pre-or post-harvest application of the most commonly used elicitors to several fruits is discussed in this review.

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“…Non-enzymatic antioxidant system includes biochemicals such as carotenoids, flavonoids, ascorbic acid and glutathione. Flavonoids commonly absorb the light in the region of 280-320 nm and thus are capable to protect the plant from damage (Eichholz et al, 2011;Reshmi and Rajalakshmi, 2012). Carotenoids also have antioxidant properties and act as an internal filter against UV radiation (Nasibi and Kalantari, 2005).…”

Section: Introductionmentioning

confidence: 99%

UVA + B treatment affects antioxidant system and phytochemicals of parsley plant under different concentrations of Zn

Abedini

Malaei

Daeihassani

2017

AAS

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Decline in ozone layer that followed by enhanced solar UV radiation is a limiting factor for some plants. In this study the effect of UVA+UVB radiation on parsley plant was studied hydroponically at different concentrations of Zn (1.5 and 6.5 µm). UV radiation at both concentrations of Zn, slightly decreased the plant growth and significantly increased the carotenoids, flavonoids, total phenols and H 2 O 2 contents, but had no effect on chlorophylls content. At concentration of 1.5 µm of Zn, UV radiation caused significant increases in the MDA and anthocyanin contents and the activities of POD and CAT enzymes, but decreased the soluble sugars and protein contents. At concentration of 6.5 µm of Zn, UV radiation caused significant increases in the CAT activity, but had no significant effect on other parameters. Results suggest that parsley plant tolerates UVA+UVB radiation particularly at concentration of 6.5 µmof Zn.Key words: antioxidant enzymes; parsley; photochemicals; UVA + B; Zn IZVLEČEK OBRAVNAVANJE Z UVA + UVB VPLIVA NA ANTIOKSIDACIJSKI SISTEM IN KEMIZEM PETRŠILJA PRI RAZLIČNIH KONCETRACIJAH ZnTanjšanje ozonske plasti, ki mu sledi povečano UV sončevo sevanje sta omejujoči dejavnik za nekatere rastline. V tej raziskavi je bil preučevan učinek UVA+UVB sevanja na hidroponsko gojen peteršilj pri različnih koncentracijah Zn (1.5 in 6.5 µm). UV sevanje je pri obeh koncentracijah cinka rahlo zmanjšalo rast in značilno povečalo vsebnost karotenoidov, flavonoidov, celokupnih fenolov in H 2 O 2 , a brez učinka na vsebnost klorofilov. Pri koncentraciji 1.5 µm Zn, je UV sevanje povzročilo značilno povečanje vsebnosti MDA in antocianinov, povečalo je aktivnosti encimov POD in CAT, a zmanšalo vsebnost topnih sladkorjev in beljakov. Pri koncentaraciji 6.5 µm Zn je UV sevanje povzročilo značilno povečanje v aktivnosti CAT, a ni imelo značilnega učinka na ostale parametre. Rezultati nakazujejo, da peteršilj dobro prenaša UVA+UVB sevanje, še posebej pri koncentraciji 6.5 µm Zn.

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UV-B-induced changes of volatile metabolites and phenolic compounds in blueberries (Vaccinium corymbosum L.)

Cited by 85 publications

References 32 publications

Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation

Physicochemical and microbiological quality of raspberries (Rubus idaeus) treated with different doses of gamma irradiation

Elicitors: A Tool for Improving Fruit Phenolic Content

UVA + B treatment affects antioxidant system and phytochemicals of parsley plant under different concentrations of Zn

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