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| Comparison of nutritional components and free radical scavenging activities of seven vegetables soldin Shenzhen |
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| DOI：10.16768/j.issn.1004-874X.2017.10.003 |
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| Abstract: |
| In order to reveal the differences of nutritional value od different vegetables，and guide people
daily diet healthy，the vegetable nutritional components and free radical scavenging ability were studied. In this
experiment，7 kinds of common leafy vegetables sold in Shenzhen were used as materials，nine kinds of nutrient
contents and scavenging activity of vegetable juice on DPPH and ABTS were determined. The results showed that
the Ipomoea batatas（ L.） Lam contained extremely high content of total phenol，total flavonoid and higher dietary
fiber content，had the strongest free radical scavenging activity，followed by Brassica campestris L. ssp. chinensis
（L.） Makino，Spinacia oleracea L. and B. chinensis L. While Lactuca sativa var longifoliaf. Lam and L. sativa L.
var. ramosa Hort. had the lowest nutritional value，due to very low levels of bioactive substances. The correlation
coefficient analysis showed that the free radical scavenging ability of vegetable juice was positively correlated with the
content of total phenol and total flavonoid，then dietary fiber and pigment. However，the correlation between vitamin
C and free radical scavenging capacity was weak. The comprehensive analysis indicated that the nutritional value of
I. batatas（ L.） Lam and B. campestris L. ssp. chinensis（ L.） Makino was the highest，followed by S. oleracea L.，B.
parachinensis Bailey. and B. chinensis L.，and finally for L. sativa var longifoliaf. Lam and L. sativa L. var. ramosa
Hort. |
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