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Soybean seedlings enriched with iron and magnesium - impact on germination, growth and antioxidant properties

Chmielowska-Bąk J., Zinicovscaia I., Frontasyeva M., Milczarek A., Micheli S., Vysochanska M., Deckert J.

Ecological Chemistry and Engineering. S

2018

Vol. 25, nr 4

631--641

Iron (Fe) and magnesium (Mg) deficiency in human diets is a widespread problem observed in various regions of the world. Insufficient Fe uptake results in the development of iron dependent anaemia and depressed physical and intellectual performance. In turn Mg deficiency is associated with alterations in neuromuscular and cardiovascular systems. An emerging alternative to traditional supplementation of these elements in the form of pills, liquids or effervescent tablets, is introduction of fortified food products. In present study we show that preincubation of soybean seeds in Fe and Mg solutions leads to elevated content of these elements in the seedlings. Importantly the pretreatment did not affect germination rate, seedlings growth or, with an exception of Fe supplementation at highest concentration, antioxidant capacity. The obtained results indicate that preincubation of seeds in Fe and Mg solutions may be a promising method of obtaining enriched soybean sprouts.

Significance of Stump-Sprouting for the Population Size Structure and Spatial Distribution Patterns of Endangered Species, Magnolia cylindrical

Li J., Wu Y., Wu T., Cao L., Chen J., Qiu Z., Zhang Y., Xu G., Zhang J., Liu P.

Polish Journal of Ecology

2017

Vol. 65, nr 2

247--257

Magnolia cylindrica Wils. is one of the third most-protected wild plants in China. To describe the size structure and dynamics of its population, field data were obtained from eight newly established sites, using a contiguous grid quadrate method in Jiulong Mountain of East China. The population size structure and spatial distribution pattern were discussed based on a theoretical distribution model and assembling intensity index. The population size structure showed a declining trend because of the lack of seedlings. The number of stump-sprouting, size class III (sapling trees) individuals was large enough to make up for the shortage of small seedlings and the complete regeneration of populations through sprouting. The distributions of M. cylindrica, both seedling populations (Group A) and overall populations (Group B), were mostly clumped. The spatial pattern intensities of the populations at different stages (mainly small trees, middle trees, and big trees) were higher for Group A than those for Group B. The two groups have the same tendency in that the pattern intensity declined from small trees to the larger ones. Group A and Group B differed in spatial pattern: small and middle trees were randomly distributed in seedling populations, but aggregated in overall populations. The populations of M. cylindrica (both group A and B) were characterized by the pattern scale between 16 to 32 m2, measured by Greig-Smith and Kershaw methods. These results suggest that sprouting should be seriously considered in population rehabilitation and forest tending management and the area of forest tending management should be close to the maximum intensity.

Wpływ warunków chłodniczego przechowywania na właściwości kiełków koniczyny czerwonej (Trifolium pratense L.)

Brzozowska E., Gałązka-Czarnecka I., Krala L.

Chłodnictwo : organ Naczelnej Organizacji Technicznej

2014

R. 49, nr 6

38--42

Analizowano zmiany zawartości związków polifenolowych, aktywność przeciwutleniajacą oraz właściwości sensoryczne kiełków koniczyny czerwonej (Trifolium pratense L.) przechowywanych chłodniczo w t = 3 ±1°C, przez 14 dni. Porównywane próby były zapakowane w powietrzu w folie stretch (próby kontrolne K) lub w modyfikowanej atmosferze o dwóch składach: MAPI (5% O2,5% CO2,90% N2); MAP2 (5% O2, 10% CO2,90% N2). Wykazano, że chłodnicze przechowywanie badanych kiełków w MAPI przez okres 12-14 dób dobrze stabilizuje zawartość w nich związków polifenolowych, aktywność przeciwutleniajacą oraz cechy sensoryczne. W MAPI kiełki koniczyny czerwonej mogą być przechowywane blisko dwukrotnie dłużej niż w powietrzu, w zwykłych opakowaniach foliowych lub w MAP2 o zbyt wysokiej koncentracji ditlenku węgla (10%). Najwcześniej zmianom ulega zapach, a następnie smak i barwa przechowywanych kiełków.

Changes in the content of polyphenolic compounds, antioxidant activity and sensory properties of red clover sprouts (Trifolium pratense L.) was investigated. Sprouts were packed in stretch foil or modified atmosphere with two compositions: MAPI (5% O2> 5% CO2, 90% N2); MAP2 (5% O2,10% CO2,90% N2) and storaged for 14 days at 3 ± l ° C. It has been shown that the cold storage of red clover sprouts in MAPI stabilizes their content of polyphenolic compounds and acceptable sensory properties for up to 14 days. The tested sprouts can be stored in MAPI almost twice as long as in conventional packaging or MAP2 with increased carbon dioxide concentration to 10%. The earliest change is the snicll, then taste and color of the sprouts.