Effects of LED Light Exposure on Yield and Nutritional Quality of Pea Sprouts
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摘要: 探究LED红蓝复合光对豌豆芽苗菜产量和营养品质的影响，以期为豌豆芽苗菜工厂化生产的专用光源的研制提供依据。选取3种基因型豌豆品种，豌豆黑暗催芽后，进行LED白光及红蓝光比例为1：3、1：1、3：1等的4个光照处理。采用常温水培的方式，取照光5 d的豌豆芽苗菜的叶和茎，测定可食部分长、可食率等生长指标及抗氧化物质、可溶性蛋白等营养物质的含量。相比白光处理，红蓝3：1复合光显著提高了3种豌豆芽苗菜的可食率、全株鲜重等部分生长指标；同时也提高了可溶性糖、抗坏血酸等营养物质的含量；此外，不同的红蓝光比例影响不同，红光有利于豌豆芽苗菜的可溶性糖和抗氧化物质积累，蓝光有利于可溶性蛋白的积累。LED红蓝3：1复合光可有效提高豌豆芽苗菜的生长产量和营养品质，是培养豌豆芽苗菜的适宜LED红蓝复合光谱。Abstract: To determine the effects of light exposureon pea sprout cultivation and quality, different LED lamps were used on the peas of 3 genotypes. Sprouts were germinated in complete darkness, then, exposed to white (control)orred and blue LEDlampsin combination ratio of 1:3, 1:1 or 3:1 in a hydroponic bed at ambient temperature to grow for 5 d. Leaves and stems of the sprouts were collected for measurements on antioxidant, soluble sugars and soluble protein, as well as the growth indicators, such as length and percentage of edible portion. Compared to control, the 3:1 LEDcombination significantly increased the contents of ascorbic acid, soluble sugars, total phenols and flavonoids in the pea sprouts. Although blue LED tended to promote protein formation in the sprouts, it was concluded that a combined exposure to red and blue LED lamps in a ratio of 3:1 would best improve the overall growth and nutritional quality of the pea sprouts, and thus, recommended forlarge-scale application.
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Key words:
- LED red and blue lamps /
- pea /
- antioxidant /
- soluble sugar /
- soluble protein
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图 1 不同比例红蓝光照处理对可溶性糖含量的影响
Figure 1. Effect of varied combinations of red and blue LED lamps on soluble sugar content of pea sprouts
图 2 不同比例红蓝光照处理对可溶性蛋白含量的影响
Figure 2. Effect of varied combinations of red and blue LED lamps on soluble protein content of pea sprouts
图 3 不同比例红蓝光照处理对抗坏血酸含量的影响
Figure 3. Effect of varied combinations of red and blue LED lamps on ascorbic acid content of pea sprouts
图 4 不同比例红蓝光照处理对可溶性总酚含量的影响
Figure 4. Effect of varied combinations of red and blue LED lamps on total soluble phenol content of pea sprouts
图 5 不同比例红蓝光照处理对总黄酮含量的影响
Figure 5. Effect of varied combinations of red and blue LED lamps on total flavonoids content of pea sprouts
表 1 不同LED光照对豌豆芽苗菜生长指标的影响
Table 1. Effect of LED light exposure on growth indicators of pea sprouts
品种 处理 全株鲜重
/g可食部分长
/cm可食鲜重
/g可食率
/%全株干重
/g含水率
/%苏豌12054 白光 17.26±0.63b 16.42±0.32c 7.89±0.43b 45.71±0.31b 1.77±0.03b 89.51±0.47ab 红蓝3:1 19.35±0.45a 18.28±0.37a 9.68±0.47a 50.02±0.27a 1.82±0.07a 90.59±0.24a 红蓝1:1 19.11±0.09a 17.13±0.19b 9.39±0.28a 49.13±0.46ab 1.80±0.16ab 90.58±0.08a 红蓝1:3 18.15±0.05ab 17.08±0.21b 8.67±0.13a 47.13±0.37ab 1.81±0.11ab 90.34±0.09a 川豌6004 白光 15.12±0.40b 16.68±0.12c 7.28±0.23b 48.15±0.21b 1.50±0.12b 90.08±0.13a 红蓝3:1 17.37±0.52a 18.45±0.48a 8.76±0.48a 50.43±0.68ab 1.71±0.09a 90.16± 0.68a 红蓝1:1 17.02±0.27a 17.39±0.26b 9.29±0.41a 54.58±0.49a 1.66±0.11ab 90.25±0.42a 红蓝1:3 16.96±0.22a 17.24±0.19b 8.57±0.28a 52.91±0.20a 1.68±0.32ab 90.23±0.39a 苏豌麻豆 白光 16.21±0.25b 15.33±0.08c 7.47±0.34b 46.08±0.09b 1.70±0.05b 89.51±0.11a 红蓝3:1 18.55±1.04a 17.37±0.21a 9.80±0.59a 52.83±0.28a 1.84±0.02a 90.08±0.05a 红蓝1:1 17.60±0.47ab 16.23±0.49b 9.36±0.40a 53.18±0.66a 1.81±0.06ab 89.72±0.34a 红蓝1:3 17.27±0.36ab 16.05±0.28b 9.12±0.310a 52.14±0.53a 1.80±0.11ab 89.47±0.36a 注：表中数据为平均数±标准差；且同列数据后小写字母表示在P＜0.05水平显著差异。 
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