Biochemical Compounds, Antioxidant Capacity, Leaf Color Profile and Yield of Basil (Ocimum sp.) Microgreens in Floating System

Fayezizadeh, Mohammad Reza; Ansari, Naser Alemzadeh; Sourestani, Mohammad Mahmoodi; Hasanuzzaman, Mirza

doi:10.3390/plants12142652

Cited by 3 publications

(2 citation statements)

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“…In a prior study, among 21 basil microgreen cultivars, the Ablagh genotype had the greatest APCI [13]. In general, due to its origin (Tabriz city), this genotype has high potential for the production of secondary metabolites and thus produces the greatest amounts of Vit C, TFC, and ACNs.…”

Section: Discussionmentioning

confidence: 91%

“…As a product rich in plant biochemicals with antioxidant properties, it is used in plant factories. In a previous study, among 21 basil microgreeen genotypes and cultivars, the Violeto, Red Rubin, Kapoor, and Ablagh genotypes had the highest APCI index [13], and in another study, it was shown that changing control conditions and growth as well as nutrient solution changes can increase the TAC of these cultivars [14]; however, no information has been reported about their antioxidant response, photosynthesis and performance under different photoperiods and under continuous lighting. Accordingly, this research was conducted to investigate the effect of short and long photoperiods (including CL) on the yield, photosynthesis and antioxidant compounds of basil microgreens in a oating system.…”

Section: Introductionmentioning

confidence: 99%

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Variations in Photoperiods and Their Impact on Yield, Photosynthesis and Secondary Metabolite Production in Basil Microgreens

Fayezizadeh,

Ansari,

Sourestani

et al. 2024

Preprint

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Background The effects of different photoperiods on plant phytochemical synthesis can be improved by adjusting the daily light integral (DLI). Changes in the internal rhythm of the plant and the synthesis and performance of secondary metabolites are largely dependent on environmental factors that control growth, one of the most significant of which is photoperiod. Information about the appropriate standard in terms of photoperiod for growing basil microgreens as one of the most important medicinal plants is limited. In this study, the effects of five different photoperiods, 6 (6 hours × 3 cycles), 8 (8 hours × 2 cycles), 16, 18, and 24 h day− 1 on the yield, photosynthesis and synthesis of secondary metabolites of three cultivars and one genotype of basil microgreens were evaluated. The purpose of this research was to determine the feasibility of using permanent light in growing basil microgreens and to create the best balance between beneficial secondary metabolites and performance. Results The results showed that the effects of photoperiod and cultivar on all investigated traits and their interaction on photosynthetic pigments, antioxidant capacity, total phenolic compounds, proline content and net photosynthesis rate were significantly different at the 1% level. The highest levels of vitamin C, flavonoids, anthocyanins, yield and antioxidant potential composite index (APCI) were obtained under the 24-h photoperiod. The highest antioxidant capacity was obtained for the Kapoor cultivar, and the highest total phenolic compound and proline contents were measured for the Ablagh genotype under a 24-h photoperiod. The highest yield (4.36 kg m− 2) and APCI (70.44) were obtained for the Ablagh genotype. The highest nitrate content was obtained with a photoperiod of 18 h for the Kapoor cultivar. The highest net photosynthesis rate was related to the Violeto cultivar under a 24-hour photoperiod (7.89 µmol Co2 m− 2 s− 1). Antioxidant capacity and flavonoids had a positive correlation with phenolic compounds and vitamin C. Yield had a positive correlation with antioxidant capacity, flavonoids, vitamin C, APCI, and proline. Conclusions Under continuous light conditions, basil microgreens resistance to light stress by increasing the synthesis of secondary metabolites and the increase of these biochemical compounds made basil microgreens increase their performance along with the increase of these health-promoting compounds. The best balance between antioxidant compounds and performance was achieved in continuous red + blue light. Based on these results, the use of continuous artificial LED lighting, due to the increase in plant biochemical with antioxidant properties and yield, can be a suitable strategy for growing basil microgreens in floating systems.

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Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Variations in Photoperiods and Their Impact on Yield, Photosynthesis and Secondary Metabolite Production in Basil Microgreens

Fayezizadeh,

Ansari,

Sourestani

et al. 2024

Preprint

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Balancing Yield and Antioxidant Capacity in Basil Microgreens: An Exploration of Nutrient Solution Concentrations in a Floating System

Fayezizadeh,

Ansari,

Sourestani

et al. 2023

Agriculture

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The appropriate concentration of the nutrient solution (NS) plays an important role in the yield, antioxidant capacity, and biochemical compounds of basil microgreens in the floating system. This study examined the impact of five different concentrations of Hoagland’s NS (25%, 50%, 75%, 100%, and 125%) on the antioxidant capacity, biochemical compounds, and yield of four basil cultivars and genotypes (Persian Ablagh, Violeto, Kapoor and Red Rubin) in a floating system, utilizing a split plots designs. Results revealed that the highest yield was achieved with a 50% NS concentration. The Persian Ablagh genotype, under a 125% NS concentration, exhibited the highest content of carotenoids, flavonoids, phenolic compounds, and antioxidant potential index (APCI). The Violeto cultivar at a 100% NS concentration produced the highest amounts of vitamin C and anthocyanin. The Kapoor cultivar, when grown with a 100% NS concentration, demonstrated the greatest antioxidant capacity. The nutrient solution with 125% concentration compared to 50% concentration reduced the yield by 23.29%. Also, the performance of the Violeto cultivar increased by 36.24% compared to the red variety of Robin. According to the APCI index, the genotype of Iranian Ablaq basil increased by 152.79% in the treatment of nutrient solution with a concentration of 125% compared to 50%. In this study, yield and total chlorophyll showed a significant negative correlation. A significant positive correlation was observed between vitamin C content and flavonoids, anthocyanin, phenolic compounds, and antioxidant capacity. Anthocyanin content exhibited a positive and significant correlation with the APCI. Based on these findings, we recommend a 50% NS concentration of Hoagland’s NS for optimal yield, a 125% NS concentration for the production of secondary metabolites with enhanced antioxidant capacity, and a 100% NS concentration as a balance between antioxidant properties and yield for basil microgreens production in a floating system.

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Management of Secondary Metabolite Synthesis and Biomass in Basil (Ocimum basilicum L.) Microgreens Using Different Continuous-Spectrum LED Lights

Fayezizadeh,

Ansari,

Sourestani

et al. 2024

Plants

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Different LED light spectra (LS) are absorbed by different plant photoreceptors and can control biomass and plant secondary metabolite synthesis. In this study, the effects of continuous-spectrum LED lights (red, blue, white, red + blue, and 12 h blue + 12 h red) on the production value, antioxidant compounds, and biomass of basil (Ocimum basilicum L.) microgreens (Red Rubin, Violeto, and Kapoor cultivars and the Ablagh genotype) were investigated. The results showed significant effects of LS on cultivar (Cv) and the interaction of LS and Cv on the studied traits. The highest quantitys of chlorophyll a, total chlorophyll, and nitrate were obtained in Violeto under blue lighting. Red lighting enhanced starch synthesis in Red Rubin and flavonoids in the Violeto Cv. The highest biomass (4.54 kg m−2) was observed in the Ablagh genotype and the highest carbohydrate synthesis in Violeto Cv in the red + blue treatment. The highest anthocyanin content (26.33 mg 100 g−1 FW) was observed for Red Rubin Cv under 12 h blue + 12 h red light. The greatest antioxidant capacity (83.57% inhibition), the highest levels of phenolic compounds (2027.25 mg GA 100 g−1 FW), vitamin C (405.76 mg 100 g−1 FW), proline, antioxidant potential composite index (APCI), and the greatest production values were obtained for the Ablagh genotype under blue lighting. Taken together, the experiment findings indicate that growing the Ablagh genotype under continuous blue lighting can increase the antioxidant capacity, phenolic compounds, and vitamin C and that this LED light spectrum can be used as a practical method to produce basil microgreens with high nutritional health value.

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Biochemical Compounds, Antioxidant Capacity, Leaf Color Profile and Yield of Basil (Ocimum sp.) Microgreens in Floating System

Cited by 3 publications

References 60 publications

Variations in Photoperiods and Their Impact on Yield, Photosynthesis and Secondary Metabolite Production in Basil Microgreens

Variations in Photoperiods and Their Impact on Yield, Photosynthesis and Secondary Metabolite Production in Basil Microgreens

Balancing Yield and Antioxidant Capacity in Basil Microgreens: An Exploration of Nutrient Solution Concentrations in a Floating System

Management of Secondary Metabolite Synthesis and Biomass in Basil (Ocimum basilicum L.) Microgreens Using Different Continuous-Spectrum LED Lights

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