Abstract
Biothiols are well-known beneficial antioxidants that protect cells from oxidative damage that potentially leads to cancer and Alzheimer's disease. This study investigated and compared the levels of important biological thiols including glutathione (L-glutamyl-L-Cysteinyl glycine, GSH), N-acetylcysteine (NAC), captopril (CAP), cysteine (CYS), and gamma-glutamyl cysteine (GGC) in a variety of organic versus conventional (industrially-produced) asparagus, spinach, green beans and red peppers, using a sensitive high-performance liquid chromatography (HPLC) technique. Only the contents of CYS, or CYS with NAC, were detected as significantly higher in organic green beans or organic asparagus, respectively. However, conventional spinach contained significantly higher amounts of all investigated thiols than contained the organic spinach. Results also showed that conventional or organic production methods did not significantly affect the contents of CAP, GSH or CYS in asparagus, green beans or red poppers. In conclusion, production methods do not appear to be the only factor affecting the thiol contents in vegetables.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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
Claim · model-written summary
Organic green beans had significantly higher cysteine (CYS) content than conventional green beans.
Verbatim
e0“organic versus conventional (industrially-produced) asparagus, spinach, green beans and red peppers”
e1“Only the contents of CYS, or CYS with NAC, were detected as significantly higher in organic green beans or organic asparagus, respectively”
Claim · model-written summary
Organic asparagus had significantly higher CYS with NAC content than conventional asparagus.
AsparagusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic versus conventional (industrially-produced) asparagus, spinach, green beans and red peppers”
e1“Only the contents of CYS, or CYS with NAC, were detected as significantly higher in organic green beans or organic asparagus, respectively”
Claim · model-written summary
Conventional spinach contained significantly higher amounts of all investigated thiols than organic spinach.
- Taxon
- spinach
Spinacia oleraceae2 - Treatment
- conventionale2
- Outcome
- amounts of all investigated thiolse2
- Direction
- significantly highere2
- Comparator
- organic spinache2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“conventional spinach contained significantly higher amounts of all investigated thiols than contained the organic spinach”
Claim · model-written summary
Conventional or organic production methods did not significantly affect GSH, CAP or CYS contents in asparagus.
- Treatment
- conventional or organic production methodse3
- Outcome
- contents of CAP, GSH or CYSe3
- Direction
- did not significantly affecte3
- Comparator
- conventional or organice3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“conventional or organic production methods did not significantly affect the contents of CAP, GSH or CYS in asparagus, green beans or red poppers”
Claim · model-written summary
Conventional or organic production methods did not significantly affect GSH, CAP or CYS contents in green beans.
Verbatim
e3“conventional or organic production methods did not significantly affect the contents of CAP, GSH or CYS in asparagus, green beans or red poppers”
Claim · model-written summary
Conventional or organic production methods did not significantly affect GSH, CAP or CYS contents in red peppers.
- Taxon
- red peppers
Capsicum annuum var. annuume0 - Treatment
- conventional or organic production methodse3
- Outcome
- contents of CAP, GSH or CYSe3
- Direction
- did not significantly affecte3
- Comparator
- conventional or organice3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“organic versus conventional (industrially-produced) asparagus, spinach, green beans and red peppers”
e3“conventional or organic production methods did not significantly affect the contents of CAP, GSH or CYS in asparagus, green beans or red poppers”
The same questions in other papers
cultivation system · molecular: metabolites · Capsicum annuum (sweet pepper)Positive and negative results
1 paper in the same direction as this paper · 4 reporting no difference from an alternative
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →cultivation system · molecular: metabolites · AsparagusResults agree
1 paper in the same direction as this paper
- positive
cultivation system · molecular: metabolites · Phaseolus vulgaris (common bean)Results agree
2 papers in the same direction as this paper
- positive
- positive
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.