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diosgenin

compound / compound-diosgenin

ジオスゲニン

Diosgenin is a steroidal sapogenin measured in fenugreek leaves and similar plants. Correlation with bitterness value does not imply causation.

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  1. Overview
  2. Sources for this overview (1)
  3. Topic hubs
  4. Follow the connections
  5. Related entries (5)
  6. Composition and content (1)
  7. Sensory (2)
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Reading the bitterness

In a study of fenugreek (genus Trigonella) leaves across ten species and thirty accessions, diosgenin content and bitterness value were reported to show a correlation of r = 0.92. However, this correlation analysis was conducted on the same thirty accessions, and was not an experiment that separated other coexisting components or species- and accession-level differences, so it does not demonstrate that diosgenin is the direct cause of bitterness.

In a separate analysis of the same material (hierarchical cluster analysis based on principal component analysis), seven accessions with high diosgenin content (TFG1, TFG2, TTH1, TTH2, TTH3, TCO3, TEP1) were classified into a group with high bitterness value, along with riboflavin, β-carotene, carotenoid, chlorophyll a, and others. This classification is at the accession level and represents a separate analysis based on the same dataset as the Pearson correlation, so it cannot be considered an independent validation.

Sources for this overview

  1. Nutritional value, phytochemical composition, and antioxidant potential of Iranian fenugreeks for food applications

    Bakhtiar Ziba; Hassandokht Mohammadreza; Naghavi Mohammad Reza; Mirjalili Mohammad Hossein / 2024 / journal article / full text checked

    Checked for this overview: Used the correlation coefficient r = 0.92 between diosgenin content and bitterness value. / Used the result that high-diosgenin accessions were classified into the same group as high bitterness value.

Follow the connections

diosgenin →is correlated with→ bitterness →can be measured separately …→ astringency

fenugreek leaves →— perceived bitterness is a…→ diosgenin

Structured claims — open a section to read each claim's confidence, evidence and limits

Composition and content (1)

diosgenin is correlated with The leaf bitter value of the same 30 populations (r=0.92)preliminary

Scope: A correlation analysis across 30 populations of 10 species

Note: A correlation within the same sample set; it is not proof that diosgenin is a direct cause of bitterness.

A correlation of r=0.92 between diosgenin content and bitter value was reported across 30 populations.
Limitations: This is a correlation, not a causal experiment separating out co-varying saponins and other compounds, or species and population differences.
Source: Nutritional value, phytochemical composition, and antioxidant potential of Iranian fenugreeks for food applications (Bakhtiar Ziba; Hassandokht Mohammadreza; Naghavi Mohammad Reza; Mirjalili Mohammad Hossein, 2024) · full text checked
Show datacompound-diosgenin —is_correlated_with→ "The leaf bitter value of the same 30 populations (r=0.92)"
claim: clm-fenugreek-diosgenin-correlation / type: composition / updated: 2026-08-31

Sensory (2)

diosgenin is correlated with bitternesspreliminary

Scope: Layer: Food. 10 Trigonella species, 30 accessions of leaves; principal component analysis (biplot) (Fig. 8a).

"TFG1, TFG2, TTH1, TTH2, TTH3, TCO3, and TEP1 characterized with high values in riboflavin, β-carotene, carotenoid, TSC, chlorophyll a, bitterness value, and diosgenin were placed in the first group."
Limitations: This is a group classification at the accession level and a separate analysis based on the same dataset as the existing Pearson correlation (r = 0.92, Fig. 9), so it does not constitute an independent validation. Confounding with other variables within the cluster (riboflavin, β-carotene, carotenoid, TSC, chlorophyll a, etc.) remains.
Source: Nutritional value, phytochemical composition, and antioxidant potential of Iranian fenugreeks for food applications (Bakhtiar Ziba; Hassandokht Mohammadreza; Naghavi Mohammad Reza; Mirjalili Mohammad Hossein, 2024) · full text checked
Show datacompound-diosgenin —is_correlated_with→ sensation-bitter
claim: clm-w72a1-diosgenin-bitterness-cluster / type: sensory / updated: 2026-09-08
fenugreek leaves — perceived bitterness is associated with: diosgeninsupported

Scope: Layer: Food. Correlation data across dry leaf extract samples from 10 Trigonella species and 30 accessions of Iranian origin (cultivated in the same plot).

"diosgenin content with bitterness value (r = 0.92)". The same section also records a negative correlation (r = -0.83), but the target of that correlation (TTC or bitterness value) cannot be uniquely determined from the sentence alone.
Limitations: This is only a correlation coefficient, not a dose-response experiment that would directly demonstrate that diosgenin is the causal substance producing bitterness. The correlation is from pooled data of 10 species and 30 accessions, not the correlation coefficient for T. foenum-graecum alone.
Source: Nutritional value, phytochemical composition, and antioxidant potential of Iranian fenugreeks for food applications (Bakhtiar Ziba; Hassandokht Mohammadreza; Naghavi Mohammad Reza; Mirjalili Mohammad Hossein, 2024) · full text checked
Show dataingredient-fenugreek-leaves —has_perceived_bitterness_associated_with→ compound-diosgenin
claim: clm-w72b2-fenugreek-diosgenin-bitterness / type: sensory / updated: 2026-09-08

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