Paper · 2024 · Heliyon

Phytochemical compositions and antioxidant activity of green and purple basils altered by light intensity and harvesting time

Paria Eskandarzade; Mahboobeh Zare Mehrjerdi; Nazim S. Gruda; et al.

6
claims
10
verbatim quotes
20
citations
2
research areas
✓
Open access · cc-by

Abstract

L. is one of the most important medicinal and vegetable crops due to its essential oil, pleasant aroma and taste. In this study, we evaluated the impact of different light intensities, including 100 %, 50 %, and 30 % of natural sunlight, on the growth, phytochemical compositions, and antioxidant activity of green and purple basil cultivars at two different harvest times: early morning and noon. The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars. When the plants of both cultivars were grown under full light intensity and were sampled at noon, they showed the highest phenolic and flavonoid contents. The highest antioxidant activity was detected in purple basil cultivars grown under 30 and 50 % of sunlight in both harvests. The green basil cultivar showed the highest antioxidant activity when exposed to 30 % sunlight and harvested in the early morning. The highest essential oil content and yield in both basil cultivars were obtained under full sunlight in the early morning harvests. In summary, light intensity and harvest time influence the phytochemical yield, composition, and growth of two studied basil cultivars. Optimal results, particularly for medicinal purposes, were achieved by morning harvesting to maximize the essential oil yield of basils.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 6

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Decreasing light intensity reduced basil plant height, leaf number and petiole length.

Treatment
decreasing light intensitye1
Outcome
height of the plant, number of leaves per plant, length of the petiolee1
Direction
reducede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars”

✓ located verbatim in the source · abstract, characters 398–604 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Decreasing light intensity reduced basil stem diameter and shoot fresh and dry weight.

Treatment
decreasing light intensitye1
Outcome
diameter of the stem, and fresh and dry weight of the shoote1
Direction
reducede1

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars”

✓ located verbatim in the source · abstract, characters 398–604 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Basil grown under full light and sampled at noon had the highest phenolic and flavonoid contents.

Treatment
full light intensitye2
Outcome
phenolic and flavonoid contentse2
Direction
higheste2
Qualifier
sampled at noone2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars”

✓ located verbatim in the source · abstract, characters 398–604 · show in text ↑
e2

“When the plants of both cultivars were grown under full light intensity and were sampled at noon, they showed the highest phenolic and flavonoid contents”

✓ located verbatim in the source · abstract, characters 606–759 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Purple basil grown under 30 and 50% sunlight had the highest antioxidant activity in both harvests.

Material
purple basil cultivarse3
Treatment
30 and 50 % of sunlighte3
Outcome
antioxidant activitye3
Direction
higheste3
Qualifier
in both harvestse3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars”

✓ located verbatim in the source · abstract, characters 398–604 · show in text ↑
e3

“The highest antioxidant activity was detected in purple basil cultivars grown under 30 and 50 % of sunlight in both harvests”

✓ located verbatim in the source · abstract, characters 761–885 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Green basil grown under 30% sunlight and harvested in the early morning had the highest antioxidant activity.

Material
green basil cultivare4
Treatment
30 % sunlighte4
Outcome
antioxidant activitye4
Direction
higheste4
Qualifier
harvested in the early morninge4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars”

✓ located verbatim in the source · abstract, characters 398–604 · show in text ↑
e4

“The green basil cultivar showed the highest antioxidant activity when exposed to 30 % sunlight and harvested in the early morning”

✓ located verbatim in the source · abstract, characters 887–1016 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Full sunlight with early-morning harvest gave basil the highest essential oil content and yield.

Material
both basil cultivarse5
Treatment
full sunlighte5
Outcome
essential oil content and yielde5
Direction
higheste5
Qualifier
in the early morning harvestse5

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Ocimum basilicum
Ocimum basilicum · TaxonCastielli · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e1

“The height of the plant, number of leaves per plant, length of the petiole, diameter of the stem, and fresh and dry weight of the shoot were all reduced by decreasing light intensity in both basil cultivars”

✓ located verbatim in the source · abstract, characters 398–604 · show in text ↑
e5

“The highest essential oil content and yield in both basil cultivars were obtained under full sunlight in the early morning harvests”

✓ located verbatim in the source · abstract, characters 1018–1149 · show in text ↑

light · yield · Ocimum basilicum (basil)Positive and negative results

23 papers: 15 positive, 8 negative or no effect

7 papers in the same direction as this paper · 15 in the opposite direction

  1. positive
  2. positive
  3. positive

19 papers more in this group

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light · quality: phytochemicals · Ocimum basilicum (basil)Positive and negative results

26 papers: 23 positive, 3 negative or no effect

22 papers in the same direction as this paper · 2 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
  2. positive
  3. positive

22 papers more in this group

See all 26 papers →

light · growth · Ocimum basilicum (basil)Positive and negative results

37 papers: 28 positive, 9 negative or no effect

8 papers in the same direction as this paper · 28 in the opposite direction

  1. positive
  2. positive
  3. positive

33 papers more in this group

See all 37 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.