首页|Comparison of growth characteristics, functional qualities, and texture of hydroponically grown and soil-grown lettuce
Comparison of growth characteristics, functional qualities, and texture of hydroponically grown and soil-grown lettuce
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
Hydroponics has become one of the most popular approaches in today's agricultural production. Yet it is questionable whether hydroponics produce vegetables with comparable quality to soil-grown vegetables. In this study, hydroponically and soil-grown lettuce were compared for morphology, texture, antioxidant capacity, and functional quality. Giant Caesar lettuce was grown in laboratory-constructed hydroponic or soil systems for 35 days. Above-ground plant size, biomass, and leaf size of hydroponic lettuce were not significantly different from soil-grown lettuce. Hydroponic lettuce had significantly (p < 0.05) longer roots, higher moisture and lower ash. No significant difference in ascorbic acid, chlorophyll, beta-carotenes, and total phenolics was found in freeze-dried lettuce. However, all compounds analyzed were significantly higher in soil-grown lettuce based on fresh weight. Antioxidant capacity of soil-grown lettuce was significantly higher on both dry-(15.32%) and wet-basis (41.20%). Hydroponic lettuce had softer leaves and firmer midribs; potentially linked to increased lignin (24.18%) in plant cell walls. This represents the first comprehensive side-by-side growth study demonstrating that lettuce grown hydroponically is not the same quality as that grown in soil.
NSTL
Elsevier
