Enhancement of gama-aminobutyric acid (GABA) and other health-related metabolites in germinated red rice (Oryza sativa L.) by ultrasonication

Junzhou Ding, Alexander V. Ulanov, Mengyi Dong, Tewu Yang, Boris V. Nemzer, Shanbai Xiong, Siming Zhao, Hao Feng

Research output: Research - peer-reviewArticle

Abstract

Red rice (Oryza sativa L.) that has a red (reddish brown) bran layer in de-hulled rice is known to contain rich biofunctional components. Germination is an effective technique to improve the nutritional quality, digestibility, and flavor of de-hulled rice. Ultrasonication, a form of physical stimulation, has been documented as a novel approach to improve the nutritional quality of plant-based food. This study was undertaken to test the use of ultrasound to enhance the nutritional value of red rice. Ultrasonication (5 min, 16 W/L) was applied to rice during soaking or after 66 h germination. Changes of metabolites (amino acids, sugars, and organic acids) in red rice treated by ultrasonication were determined using a GC/MS plant primary metabolomics analysis platform. Differential expressed metabolites were identified through multivariate statistical analysis. Results showed that γ-aminobutyric acid (GABA) and riboflavin (vitamin B2) in red rice significantly increased after germination for 72 h, and then experienced a further increase after treatment by ultrasound at different stages during germination. The metabolomics analysis showed that some plant metabolites, i.e. GABA, O-phosphoethanolamine, and glucose-6-phosphate were significantly increased after the ultrasonic treatment (VIP > 1.5) in comparison with the untreated germinated rice. The findings of this study showed that controlled germination with ultrasonic stress is an effective method to enhance GABA and other health-promoted components in de-hulled rice.

LanguageEnglish (US)
Pages791-797
Number of pages7
JournalUltrasonics Sonochemistry
Volume40
DOIs
StatePublished - Jan 1 2018

Fingerprint

metabolites
rice
health
acids
augmentation
Aminobutyrates
Metabolites
Ultrasonics
Health
Oryza
germination
Metabolomics
Germination
Nutritive Value
Vitamin B Complex
Glucose-6-Phosphate
Organic acids
gamma-Aminobutyric Acid
Statistical methods
Amino Acids

Keywords

  • Germination
  • Metabolites
  • Power ultrasound
  • Red rice
  • Riboflavin
  • γ-Aminobutyric acid (GABA)

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics

Cite this

Enhancement of gama-aminobutyric acid (GABA) and other health-related metabolites in germinated red rice (Oryza sativa L.) by ultrasonication. / Ding, Junzhou; Ulanov, Alexander V.; Dong, Mengyi; Yang, Tewu; Nemzer, Boris V.; Xiong, Shanbai; Zhao, Siming; Feng, Hao.

In: Ultrasonics Sonochemistry, Vol. 40, 01.01.2018, p. 791-797.

Research output: Research - peer-reviewArticle

Ding, Junzhou ; Ulanov, Alexander V. ; Dong, Mengyi ; Yang, Tewu ; Nemzer, Boris V. ; Xiong, Shanbai ; Zhao, Siming ; Feng, Hao. / Enhancement of gama-aminobutyric acid (GABA) and other health-related metabolites in germinated red rice (Oryza sativa L.) by ultrasonication. In: Ultrasonics Sonochemistry. 2018 ; Vol. 40. pp. 791-797
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