pomelo pith
ingredient / ingredient-pomelo-pith
ザボンの白皮 / Citrus grandis (L.) Osbeck
Pomelo albedo (the white mesocarp). Quantification of naringin and limonin, debittering, and sensory evaluation were addressed in the same study.
Photographs (captions in Japanese)
ポメロ（ザボン）の果実。房状の果肉を分厚い白皮（中果皮）が包んだ状態で写っている。原典ページに学術種名の記載はなく、通称ポメロとしての掲載。
写っているもの: Citrus maxima（原典は pomelo と記載。学名表記は原典になし）部位・状態: 果実を割って果肉を取り出した状態。果肉房を包む白く厚い中果皮（アルベド、いわゆる白皮）が見えている
写真: Allen Timothy Chang (Allentchang, English Wikipedia)／ CC BY-SA 3.0／ 原画像／ 台帳の原画像
写真の範囲と来歴
被写体の確認: 原典の記載による同定。原典ページは被写体を単に「pomelo」と記載し、学術種名の記載はない。専門家による再同定は行っていない。
掲載画像: Wikimedia Commons の原寸版。苦味研究所では切り抜き・色調変更なし。 表示用には幅1200px上限のWebPを配信し、台帳の原画像は上のリンクから確認できます。
On this page (9 sections)
Reading the bitterness
Pomelo white peel (albedo, the white part of the mesocarp) is an ingredient for which the contents of naringin and limonin, known bitter constituents, processing to reduce them, and sensory evaluation were addressed in the same paper. A 2025 study tested conditions combining β-cyclodextrin, a cyclic sugar compound, with ultrasound treatment on the albedo of the Kao Nampung variety of pomelo. Untreated albedo contained 18.90 naringin and 0.2907 limonin (both mg/g dry weight), but after treatment combining 0.7% β-cyclodextrin and ultrasound, these were measured at 5.1395 and 0.0776, respectively.
The same study also reports bitterness ratings by 15 trained assessors and concludes that processing reduced bitterness, stating that the lowest rating for treated samples was 1.31. However, although the sensory-methods section is supposed to use a scale from 0 (no bitterness) to 5 (very strong), the value shown in the table for the untreated sample is 7.20, above the scale maximum. The paper itself cannot establish which is correct, the methods description or the table value; although the direction of reduced bitterness can be read, the absolute value of how much it fell must remain on hold. The chemical quantification values for naringin and limonin can be read separately from this internal inconsistency in the sensory evaluation.
Sources for this overview
Postprandial Glucose Reduction by Pomelo Albedo Treated with β-Cyclodextrin and Ultrasound
Checked for this overview: The range in which the naringin and limonin concentrations before and after treatment were confirmed. / The range in which the report of the minimum post-treatment bitterness rating of 1.31 by a 15-person panel was confirmed. / The range in which the internal inconsistency between the 0-5 scale and the untreated value of 7.20 was confirmed.
Follow the connections
pomelo pith →is reduced by→ pomelo albedo β-cyclodextrin ultrasound treatment →reduces→ bitterness
Measured values (4)
| Kind | Compound | Target | Value | Conditions | Source |
|---|---|---|---|---|---|
| concentration | naringin | pomelo pith | 18.90 mg/g DW | Untreated Kao Nampung pomelo albedo (Table 3。) | Jaroennon Pattamaporn, 2025 |
| concentration | naringin | pomelo pith | 5.1395 mg/g DW | 0.7% β-CD plus ultrasonic treatment (Table 3。) | Jaroennon Pattamaporn, 2025 |
| concentration | limonin | pomelo pith | 0.2907 mg/g DW | Untreated Kao Nampung pomelo albedo (Table 3。) | Jaroennon Pattamaporn, 2025 |
| concentration | limonin | pomelo pith | 0.0776 mg/g DW | 0.7% β-CD plus ultrasonic treatment (Table 3。) | Jaroennon Pattamaporn, 2025 |
Values are the reported values of each source (with units and conditions). Thresholds and EC50 depend on the panel and method; they are not single true values.
Hypotheses and recipe candidates for this entry are on the Japanese page.
Structured claims — open a section to read each claim's confidence, evidence and limits
Sensory (2)
Scope: A comparison reported as a rank-rating by a 15-member trained panel
Note: The methods describe a 0-5 scale, but the untreated value in Table 3 is 7.20. The direction is reported, but there is an internal inconsistency in the numeric scale.
Show data
ingredient-pomelo-pith —has_perceived_bitterness_suppressed_by→ process-pomelo-cyclodextrin-ultrasoundScope: An internal cross-check between the text and tables of Jaroennon et al. 2025
Note: The inconsistency itself is recorded here. No correction has been confirmed.
Show data
ingredient-pomelo-pith —has_methodological_limitation→ "The 0-5 scale stated in the sensory-evaluation methods is inconsistent with the untreated bitterness value of 7.20 in Table 3"How processing and cooking change it (1)
Scope: Kao Nampung pomelo albedo, 0.7% β-CD combined with ultrasound processing
Note: The chemical quantification of naringin and limonin is consistent with the methods and tables. Health-effect claims are not adopted.
Show data
ingredient-pomelo-pith —is_reduced_by→ process-pomelo-cyclodextrin-ultrasoundCulture (1)
Scope: A candidate at the level of general knowledge. Regional and naming differences have not been confirmed.
No source connected — this claim has not been verified yet. It is a general-knowledge placeholder, not a confirmed statement.
Show data
ingredient-pomelo-pith —is_used_as→ "A vegetable/ingredient carrying bitterness"