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Microwave irradiation enhances the germination rate of tartary buckwheat and content of some compounds in its sprouts

100%

Wang S., Wang J., Guo Y.

Polish Journal of Food and Nutrition Sciences

2018

tom 68

nr 3

Tartary buckwheat (Fagopyrum tataricum) seeds were irradiated with microwaves at various power levels of 200, 400, 600 and 800 W for 10 or 30 s. The irradiated grains were germinated for 3, 5, and 7 days and harvested. The germination rate of the tartary buckwheat seeds and contents of some compounds in the sprouts were investigated. The results showed that the exposure to 600 W microwaves for 10 s resulted in the highest fi nal germination rate after 7 days of germination, which was 2 times that of the control. The exposure of seeds to 800 W for 30 s showed the lowest germination rate (approximately 10%), which decreased by 87% compared with the control (p<0.05). The exposure at 600 W for 30 s stimulated the total flavones content, reduced the sugar and soluble protein contents, and increased the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. The highest free amino acid content (11 mg/g) was observed in 5-day sprouts exposed to 800 W for 10 s. Moreover, the microwave treatment had a positive effect on the catalase (CAT) and superoxide dismutase (SOD) activity.

Acid alpha-galactosidase is involved in D-chiro-inositol accumulation during tartary buckwheat germination

80%

Jia C.-F., Hu W.-H., Chang Z., Gao H.-L.

Acta Societatis Botanicorum Poloniae

2015

tom 84

nr 1

Tartary buckwheat seed and especially its sprouts are rich in D-chiroinositol (DCI). The research was to evaluate when DCI was most accumulated in tartary buckwheat sprouts. In addition, we explored the activity and expression pattern of α-galactosidase during tartary buckwheat seed germination. The results showed that DCI contents steadily increased at early stage of germination and reached the highest level of 33.42 μg/seed at 24 h during the 72 h trail. However, the total fagopyritol contents sharply decreased from 214.6 μg/seed to 46 μg/seed at the end of the germination. The activity of acid α-galactosidase increased gradually to the peak of 0.36 nkat/seed at 24 h after the primed seed imbibition. We cloned the gene fragment of α-galactosidase in tartary buckwheat for the first time. The deduced amino acid sequence is 93% identical to that of P. vulgaris. The quantitative PCR result of gene expression pattern was consistent with its enzyme activity during seed germination.

Bioaktywne metabolity gryki (Fagopyrum Mill.)

80%

Zawadzka A., Kobus-Cisowska J., Stachowiak B.

Zagadnienia Doradztwa Rolniczego

2021

nr 1

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Polish Journal of Food and Nutrition Sciences

1 Zagadnienia Doradztwa Rolniczego

1 Chang Z.

1 Gao H.-L.

1 Guo Y.

1 Hu W.-H.

1 Jia C.-F.

1 Kobus-Cisowska J.

1 Stachowiak B.

1 Wang J.

1 Wang S.

1 Zawadzka A.

1 2021

1 2018

1 2015

Wyniki wyszukiwania

Microwave irradiation enhances the germination rate of tartary buckwheat and content of some compounds in its sprouts

Acid alpha-galactosidase is involved in D-chiro-inositol accumulation during tartary buckwheat germination

Bioaktywne metabolity gryki (Fagopyrum Mill.)