Paper · 2023 · IOP Conference Series Earth and Environmental Science

The changes in Gamma-aminobutyric acid and polyphenols in mung beans (Vigna radiata L.) during germination

T A Vu; C T Kha; T H Phan

6
claims
14
verbatim quotes
1
citations
1
research areas
✓
Open access · cc-by

Abstract

Abstract Gamma-aminobutyric acid (GABA), an inhibitory neurotransmitter, plays a role in regulating neuronal excitability. Polyphenols naturally occur in plants and help to prevent or reverse damage in cells caused by aging, the environment, and lifestyle. Edible sprouts such as mung beans are a valuable source that presents high content of bioactive compounds. These contents in raw mung beans are very low, but they increase significantly during germination. The objectives of this study were to determine the most appropriate germination conditions, including air relative humidity (80%, 90%, and 99%), salt concentrations (0, 0.5%, 1.0%, and 1.5%), and light conditions (dark, LED, and UV-C) during the soaking and incubation processes to maximize the content of GABA and polyphenols. The results showed that all investigated treatments (air relative humidity, salt, and light) increased GABA and polyphenol levels, but LED lighting and air relative humidity of 90% were the most effective. Under those conditions, the content of GABA and polyphenols in the germinated mung beans increased about 12 and 2 times, respectively. Furthermore, the changes in GABA and polyphenol contents were different under different soaking and incubation conditions. In conclusion, the nutritional quality of mung beans, in terms of GABA and polyphenols, could be improved by controlling light and air relative humidity during germination. It is also recommended that the germination conditions, including air relative humidity, soaking in water or salt, soaking time, and incubation time should be selected depending on the desired content of GABA or polyphenols.

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Claims 6

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

All investigated germination treatments (air relative humidity, salt, and light) increased GABA and polyphenol levels in mung beans.

Taxon
mung beansVigna radiatat0
Treatment
air relative humidity, salt, and lighte0
Outcome
GABA and polyphenol levelse0
Direction
increasede0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“mung beans (Vigna radiata L.)”

✓ located verbatim in the source · title, characters 58–87 · show in text ↑
e0

“all investigated treatments (air relative humidity, salt, and light) increased GABA and polyphenol levels, but LED lighting and air relative humidity of 90% were the most effective”

✓ located verbatim in the source · abstract, characters 815–995 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

LED lighting and 90% air relative humidity were the most effective germination treatments for raising GABA and polyphenol levels in mung beans.

Taxon
mung beansVigna radiatat0
Treatment
LED lighting and air relative humidity of 90%e0
Outcome
GABA and polyphenol levelse0
Direction
increasede0
Qualifier
the most effectivee0

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“mung beans (Vigna radiata L.)”

✓ located verbatim in the source · title, characters 58–87 · show in text ↑
e0

“all investigated treatments (air relative humidity, salt, and light) increased GABA and polyphenol levels, but LED lighting and air relative humidity of 90% were the most effective”

✓ located verbatim in the source · abstract, characters 815–995 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under the most effective conditions, GABA content in germinated mung beans increased about 12-fold.

Taxon
mung beansVigna radiatat0
Organ / stage
germinated mung beanse1
Treatment
LED lighting and air relative humidity of 90%e0
Outcome
content of GABAe1
Direction
increasede1
Value
about 12e1

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“mung beans (Vigna radiata L.)”

✓ located verbatim in the source · title, characters 58–87 · show in text ↑
e0

“all investigated treatments (air relative humidity, salt, and light) increased GABA and polyphenol levels, but LED lighting and air relative humidity of 90% were the most effective”

✓ located verbatim in the source · abstract, characters 815–995 · show in text ↑
e1

“Under those conditions, the content of GABA and polyphenols in the germinated mung beans increased about 12 and 2 times, respectively”

✓ located verbatim in the source · abstract, characters 997–1130 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Under the most effective conditions, polyphenol content in germinated mung beans increased about 2-fold.

Taxon
mung beansVigna radiatat0
Organ / stage
germinated mung beanse1
Treatment
LED lighting and air relative humidity of 90%e0
Outcome
polyphenolse1
Direction
increasede1
Value
2 timese1

Not reportedComparator

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“mung beans (Vigna radiata L.)”

✓ located verbatim in the source · title, characters 58–87 · show in text ↑
e0

“all investigated treatments (air relative humidity, salt, and light) increased GABA and polyphenol levels, but LED lighting and air relative humidity of 90% were the most effective”

✓ located verbatim in the source · abstract, characters 815–995 · show in text ↑
e1

“Under those conditions, the content of GABA and polyphenols in the germinated mung beans increased about 12 and 2 times, respectively”

✓ located verbatim in the source · abstract, characters 997–1130 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Changes in GABA and polyphenol contents in mung beans differed under different soaking and incubation conditions.

Taxon
mung beansVigna radiatat0
Treatment
different soaking and incubation conditionse0
Outcome
changes in GABA and polyphenol contentse0

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“mung beans (Vigna radiata L.)”

✓ located verbatim in the source · title, characters 58–87 · show in text ↑
e0

“the changes in GABA and polyphenol contents were different under different soaking and incubation conditions”

✓ located verbatim in the source · abstract, characters 1145–1253 · show in text ↑
Recommendationauthor interpretationoriginal resultbasis n/a

Claim · model-written summary

Germination conditions should be selected for mung beans according to the desired GABA or polyphenol content.

Taxon
mung beansVigna radiatat0
Treatment
germination conditionse0
Outcome
the desired content of GABA or polyphenolse0

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

Vigna radiata
Vigna radiata · TaxonIvar Leidus · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“mung beans (Vigna radiata L.)”

✓ located verbatim in the source · title, characters 58–87 · show in text ↑
e0

“the germination conditions, including air relative humidity, soaking in water or salt, soaking time, and incubation time should be selected depending on the desired content of GABA or polyphenols”

✓ located verbatim in the source · abstract, characters 1456–1651 · show in text ↑

salinity · quality: phytochemicals · Vigna radiata (mung bean)Results differ

3 papers: 1 positive, 2 negative or no effect

2 in the opposite direction

  1. negative
  2. negative
See all 3 papers →

light · molecular: metabolites · Vigna radiata (mung bean)Positive and negative results

13 papers: 8 positive, 5 negative or no effect

7 papers in the same direction as this paper · 4 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. no effect

9 papers more in this group

See all 13 papers →

humidity · quality: phytochemicals · Vigna radiata (mung bean)Results agree

2 papers: 2 positive, 0 negative or no effect

1 paper in the same direction as this paper

  1. positive
See all 2 papers →

light · quality: phytochemicals · Vigna radiata (mung bean)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 papers →

humidity · molecular: metabolites · Vigna radiata (mung bean)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive
See all 4 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.