A wide range of plants have benefited from the quick development of controlled environment (CE) plant manufacturing technologies. Because of their great economic and nutritional worth, strawberries have recently gained popularity as a fruit for CE manufacturing. With the growing use of LED technology in the produce sector, producers may control the growth and development of strawberries by supplying particular light spectra. Strawberry secondary metabolism may be changed, and this has a significant influence on the fruit's quality and antioxidant capabilities. While the effects of visible light on secondary metabolite production for other greenhouse crops are well known, additional knowledge is needed about the effects of various light spectra, from UV rays to visible light, on strawberry plants. This will enable farmers.
STRAWBERRY FRUIT FLAVONOID PROFILE AND FUNCTION According to Irumurugan et al. (2018), plant secondary metabolites have a variety of roles in light signalling and abiotic stress defence. phenolic compounds, which include at least one phenol unit (aromatic organic ring) in their chemical structures, are the most frequent class of secondary metabolites in strawberry fruits. Coumarins, avonoids, phenolic acids, and tannins are some of the several sub-groups of phenolic chemicals. Fruits and vegetables (i.e., vegetables and fruits; Rozema et al., 2002; Delgado et al., 2019) and drinks made from plants are abundant sources of flavonoids. Flavonoids are easily identified as the pigments in owers since they give owers its colour and scent (Dewick, 2001). Anthocyanins, avonols, and avanols are three more subgroups of flavonoids that may be classified (Aaby et al., 2012; Alvarez, 2014).
Anthocyanins Anthocyanins make up up to 40% of the total phenols in some strawberry cultivars, making them the most common phenolic component in the outer cell layers of many strawberries (Aaby et al., 2012). The primary anthocyanin in strawberries, pelargonidin 3-glucoside, has been shown to have anti-inflammatory effects (Da Silva et al., 2007; Amini et al., 2017). The formation of anthocyanins is associated with UV-B protection (280-315 nm), but it also happens in situations of visible light and far-red stress (Carvalho and Folta, 2016; Dou et al., 2017). Anthocyanins are the pigments that give flowers and fruits their colour, as well as acting as a visual cue for pollinators and seed dispersers that use insects (Turturică et al., 2015).
A wide range of plants have benefited from the rapid technological advancement in controlled environment (CE) plant production. Strawberries have recently gained popularity as a fruit for CE production due to their great economic and nutritional advantages. Growers may control strawberry growth and development by delivering particular light spectra thanks to the widespread usage of light-emitting diode (LED) technology in the produce business. Strawberry secondary metabolism may be changed, which has a significant influence on fruit quality and antioxidant characteristics. Light intensity and spectral composition can also be altered. Although though the effects of visible light on the secondary metabolite profiles of other greenhouse crops are well known, additional knowledge is needed about the effects of various light spectra, from UV radiation to the visible light spectrum, on strawberry plants.
