To study the quality characteristics of 4 kinds of typical fresh Zea mays L. varieties in Beijing-Zhangjiakou Region.
This study systematically compared the differences among 4 typical fresh Zea mays L. varieties grown in Beijing-Zhangjiakou Region, including 2 sweet-waxy varieties (336# and 368#), one sweet Zea mays L. variety (Meizhen 209) and one waxy Zea mays L. variety (Wannuo 2000). Through measurements of ear length, ear weight, moisture content, protein, crude fiber, soluble solids, total sugar, sucrose, reducing sugar and folic acid, combined with non-targeted metabolomic analysis using ultra performance liquid chromatography-quadrupole time-of-flight tandem mass spectrometry, the quality attributes of each variety were comprehensively evaluated.
The results showed that Wannuo 2000 had the highest single-ear weight and the lowest moisture content, while Meizhen 209 exhibited significantly higher soluble solids, total sugar and sucrose content than the other varieties, indicated prominent sweetness. The 336# demonstrated a significant advantage in folic acid content, reached 141 μg/100 g, along with higher reducing sugar levels. Metabolomic analysed further revealed significant difference in metabolite composition among the varieties, with sweet-waxy varieties showed similar metabolic profiles, whereas sweet Zea mays L. and waxy Zea mays L. each possessed distinct metabolic characteristics.
This study clarifies the quality differences among the 4 kinds of fresh Zea mays L.varieties under the current experimental conditions, providing a scientific basis for consumer choice, variety breeding and nutrition-oriented product development.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |