Antioxidant content of edible sprouts: effects of environmental shocks

Oh, Myung‐Min; Rajashekar, C. B.

doi:10.1002/jsfa.3711

Cited by 55 publications

(29 citation statements)

References 34 publications

(44 reference statements)

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“…Inhibition of elongation in tested microgreens was observed under higher irradiance levels: hypocotyls of mustard (P=0. 27 (Table 2).…”

Section: Resultsmentioning

confidence: 99%

“…We suggest that higher, 220-330 µmol m -2 s -1 PPFD levels should be used by growers seeking normal growth and superior nutritional quality of brassica microgreens. It has been previously reported that high light (>400 μmol m -2 s -1 ) treatment, as a mild environmental stress, was useful in enhancing nutritional properties in sprouts [27] and mature plants [15,28]. Plants typically respond to environmental stressors by inducing antioxidant production as a defense mechanism.…”

Section: Discussionmentioning

confidence: 99%

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LED irradiance level affects growth and nutritional quality of Brassica microgreens

et al. 2013

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This study examines the effect of irradiance level produced by solid-state light-emitting diodes (LEDs) on the growth, nutritional quality and antioxidant properties of Brassicaceae family microgreens. Kohlrabi (Brassica oleracea var. gongylodes, ‘Delicacy Purple’) mustard (Brassica juncea L., ‘Red Lion’), red pak choi (Brassica rapa var. chinensis, ‘Rubi F1’) and tatsoi (Brassica rapa var. rosularis) were grown using peat substrate in controlled-environment chambers until harvest time (10 days, 21/17°C, 16 h). A system of five lighting modules with 455, 638, 665 and 731 nm LEDs at a total photosynthetic photon flux densities (PPFD) of 545, 440, 330, 220 and 110 µmol m−2s−1 respectively were used. Insufficient levels of photosynthetically active photon flux (110 µmol m−2 s−1) suppressed normal growth and diminished the nutritional value of the Brassica microgreens studied. In general, the most suitable conditions for growth and nutritional quality of the microgreens was 330–440 µmol m−2 s−1 irradiation, which resulted in a larger leaf surface area, lower content of nitrates and higher total anthocyanins, total phenols and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free-radical scavenging capacity. High light levels (545 µmol m−2 s−1), which was expected to induce mild photostress, had no significant positive impact for most of investigated parameters.

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“…Inhibition of elongation in tested microgreens was observed under higher irradiance levels: hypocotyls of mustard (P=0. 27 (Table 2).…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

LED irradiance level affects growth and nutritional quality of Brassica microgreens

et al. 2013

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“…The effect of sprouting temperature on the concentration of bioactive compounds during germination of soybeans demonstrated that optimal increases in the concentrations of isoflavone aglycones (daidzein and genistein) and saponin glycosides were observed with germination at 30 °C (Paucar‐Menacho et al ., ). In the studies of Oh & Rajeshekar (), chilling and high light intensity during the growth of radishes and alfalfa sprouts caused qualitative and quantitative changes in phenolic profiles and antioxidant activities.…”

Section: Resultsmentioning

confidence: 99%

Antioxidant potential of fresh and stored lentil sprouts affected by elicitation with temperature stresses

Świeca

Surdyka

Gawlik‐Dziki

et al. 2014

Int J of Food Sci Tech

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Summary The effects of elicitation (induction at 4 °C and 40 °C; TC and TH, respectively) and postharvest storage on low‐molecular weight antioxidants and the antioxidant properties of lentil sprouts were evaluated. Elicitation affects the antioxidant content, bioactivity and potential bioaccessibility. Apart from 3‐day‐old TH sprouts, sprouts were characterised by higher levels of ascorbic acid (in comparison with controls and in fresh 4‐day‐old sprouts, its level was 51% and 46% higher for TC and TH, respectively). In comparison with the control, for 3‐day‐old fresh TC and TH sprouts, total phenolics were increased by 8.5% and 18.7%, respectively. Radical quenchers were highly bioaccessible. For TC sprouts, activity was 17% and 37% higher for 3‐ and 4‐day‐old sprouts, respectively. The metal chelating ability of chemical extracts from stored sprouts, except 4‐day‐old TC sprouts, was significantly elevated. The reducing and chelating power of potentially bioaccessible compounds of both fresh and stored sprouts did not differ significantly.

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“…Sprouting is reported to be associated with improvements of nutritional value of seeds, since it promotes accumulation of health-promoting phytochemicals (phenolic acids, flavonoids, and vitamins) (Oh and Rajashekar, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…It is well acknowledged that plants under various abiotic stresses (i.e. drought, salinity, high light and chilling; Lim et al 2012;Oh and Rajashekar, 2009) accumulate several phytochemicals, which play a major role in the adaptation of plants to unfavourable growing conditions (Guo et al, 2014;Yuan et al, 2010). Quality traits, as well as the level and activity of bioactive compounds occurring in foods of plant origin may be modified using a range of biotechnological and agronomic practices.…”

Section: Introductionmentioning

confidence: 99%

Effects of sprouting and salt stress on polyphenol composition and antiradical activity of einkorn, emmer and durum wheat

et al. 2017

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Germination is related with improvements of nutritional value of seeds, since it promotes accumulation of health-promoting phytochemicals. However, only few studies have investigated on phytochemicals accumulation during sprouting under sub-optimal conditions. Thus, we investigated the effect of salinity during germination of an einkorn (TMoM), an emmer (TDiZ) and a durum wheat (TDuC) genotype on the total polyphenols (TPC), free-and bound-phenolic acids [PAs; i.e. caffeic acid, syringic acid, Pcoumaric acid, trans-ferulic acid, and salicylic acid] contents and antiradical activity (Trolox equivalent antioxidant capacity; TEAC) of sprouts and wheatgrass. The following NaCl treatments were applied: 0 (control), 25, 50 and 100 mM NaCl concentration throughout the whole experiment, or 50 and 100 mM NaCl until sprout stage and then 0 mM until wheatgrass stage (recovery treatments). TMoM showed higher total bound-PAs both in sprouts and wheatgrass with respect to the other Triticum genotypes (+25% and 24%, respectively) as well as of total bound-PAs and bound-SA in the recovery treatments. Moderate salt stress significantly increased all the investigated variables in TDiZ. Salt stress induced higher TPC and TEAC as well as total free-PAs values till 50 mM NaCl in TDuC, whilst significantly lowered total boundPAs due to the negative variation of both P-CA (-84%) and trans-FA (-81%) acids. Results indicate that salinity during germination could be efficiently modulated to improve the nutritional quality of sprouts, wheatgrass and cereal-based products.

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Antioxidant content of edible sprouts: effects of environmental shocks

Cited by 55 publications

References 34 publications

LED irradiance level affects growth and nutritional quality of Brassica microgreens

LED irradiance level affects growth and nutritional quality of Brassica microgreens

Antioxidant potential of fresh and stored lentil sprouts affected by elicitation with temperature stresses

Effects of sprouting and salt stress on polyphenol composition and antiradical activity of einkorn, emmer and durum wheat

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