Horticulture and Product Physiology Group, Wageningen University and Research, P.O. Box 16 6700AA, Wageningen, the Netherlands.
Signify Research Laboratories, Eindhoven, the Netherlands.
Food Chem. 2022 Feb 1;369:130913. doi: 10.1016/j.foodchem.2021.130913. Epub 2021 Aug 19.
Basil suffers from chilling injury (CI) when stored at temperatures below 10-12 °C which seems related to the imbalance between reactive oxygen species (ROS) and antioxidants. We hypothesized that increased light intensity applied shortly before harvest (EOP, End-Of-Production) increases nutritional value i.e. carbohydrates and antioxidants and could improve the chilling tolerance. Two basil cultivars were grown in a vertical farming set-up at a light intensity of 150 µmol m s. During the last 5 days of growth, EOP light treatments ranging from 50 to 600 µmol m s were applied. After harvest the leaves were stored at 4 or 12 °C in darkness. Higher EOP light intensity increased the antioxidant (total ascorbic acid, rosmarinic acid) and carbohydrate contents at harvest. During storage antioxidants decreased more rapidly at 4 than at 12 °C. However, increased EOP light intensity did not alleviate chilling symptoms suggesting a minor role of antioxidants studied against chilling stress.
罗勒在 10-12°C 以下储存时会遭受冷害 (CI)，这似乎与活性氧 (ROS) 和抗氧化剂之间的失衡有关。我们假设在收获前短时间内增加光照强度（EOP，生产结束时）可以增加营养价值，即碳水化合物和抗氧化剂，并提高其抗冷性。两种罗勒品种在光照强度为 150µmol m s 的垂直农业装置中种植。在生长的最后 5 天，施加了 50 到 600µmol m s 的 EOP 光处理。收获后，叶片在黑暗中储存在 4 或 12°C。较高的 EOP 光照强度增加了收获时的抗氧化剂（总抗坏血酸、迷迭香酸）和碳水化合物含量。然而，在储存过程中，抗氧化剂在 4°C 下比在 12°C 下更快地减少。然而，增加 EOP 光照强度并没有减轻冷害症状，这表明研究中抗氧化剂对冷胁迫的作用较小。
