lime
Enable an AI agent to recognise a lime fruit, assess its condition and suitability for an intended use, and choose appropriate handling or processing actions.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
Researched by: Codex + Grok
Purpose and description
Enable an AI agent to recognise a lime fruit, assess its condition and suitability for an intended use, and choose appropriate handling or processing actions.
Lime is the small, typically green citrus fruit of several Citrus species (chiefly Citrus aurantiifolia, Citrus latifolia, and Citrus hystrix), used as a sour flavouring, beverage, and food-acid source.
It can be Identify the probable lime type and request stronger evidence when appearance is ambiguous.; Inspect rind and, when justified, open the fruit to assess internal condition.; Allocate the fruit to juice, zest, slices or another stated use based on portion-specific suitability.; Measure juice yield and acidity using recorded methods.; Choose harvesting, storage or processing actions from guidance applicable to the identified type and condition.; Hold, segregate or reject fruit when damage, decay or unresolved treatment information prevents a justified use decision..
Distinguishing features
Check for citrus fruit anatomy: an oil-gland-bearing rind surrounding internal juice-bearing tissues; a green colour or lime label alone does not establish identity.
Distinguish lime from unripe lemon using documented citrus type and supporting fruit traits; green skin and sour juice overlap and are insufficient by themselves.
Compare claimed lime type against fruit shape, size, rind character, internal organisation and seed pattern; no single profile should be imposed on every fruit sold as lime.
Separate rind colour from maturity: assess the identified type and intended use before treating a yellow fruit as overripe or a green fruit as ready.
Resolve the name against the physical referent: a citrus fruit fits this scope, while a tree called lime or a mineral powder requires another model.
Scope
+ Evidence that a fruit belongs to a citrus type recognised as lime
+ Whole-fruit condition and whether it is attached, harvested, cut or otherwise damaged
+ Rind, zest-bearing surface, pulp, juice and seeds as parts of the fruit
+ Maturity, juiciness, acidity and aroma relevant to a stated use
+ Handling history and suitability for using the peel, juice or whole fruit
- The living lime tree, its cultivation and orchard management
- Linden trees also called lime
- Mineral lime and products made from limestone
- Other citrus fruits except as identification comparators
- Extracted juice, essential oil and prepared foods as independently managed products
- Commercial shipment, inventory and packaging models
Characteristics
- Claimed lime type and identification confidence
- Recorded common name and botanical or cultivar identification where supported; confidence: confirmed, provisional, unresolved Expected appearance, seediness, flavour and usable portions depend on which lime type is present.
- Fruit attachment
- Attached to identified plant; detached with known origin; detached with unknown origin Connects identity evidence to the source plant and determines whether harvesting is an available action.
- Fruit dimensions and mass
- Length and maximum width in mm; mass in g Supports identification and portion planning without assuming that size establishes type or quality.
- Rind colour and surface condition
- Observed colour distribution, gloss, shrivelling, scars, lesions and visible residues Provides evidence about appearance and deterioration while keeping cosmetic defects separate from damage.
- Rind integrity
- Intact, superficially abraded, punctured, split, cut, leaking; location and extent recorded A breach changes what internal tissue is exposed and what handling decisions require review.
- Internal tissue condition
- Unexamined or observed pulp colour, juice-vesicle condition, dryness, discolouration and abnormal odour An intact exterior does not establish that the pulp is suitable for the intended use.
- Extractable juice yield
- mL per fruit or g juice per 100 g fruit, with extraction method Determines whether the fruit can supply a required juice quantity.
- Juice acidity
- pH and/or titratable acidity with method and reporting basis Supports flavour and formulation decisions; acidity alone does not establish preservation safety.
- Peel treatment history
- Documented coating or treatment, declared untreated, unknown Using zest or whole peel requires information that may not be necessary for merely identifying the fruit.
- Postharvest exposure
- Elapsed time in hours or days, temperature in °C, and relative humidity in % where known Helps interpret dehydration and deterioration and determine which storage guidance applies.
Also called
Where this came from
wikidata · CC0 1.0
Also registered as vr.tr.lime-food
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 5 bundles · 9 layers · 16 findings · 25 questions.
Lime identity Establishes what 'lime' denotes for this fruit and how strongly that identification is supported.
Lime is a common-name grouping, and superficial resemblance to another citrus fruit can lead to incorrect expectations.
Name and type
Connects the observed fruit to its claimed citrus identity.
Supported lime identification
Records the claimed lime type, supporting evidence and unresolved alternatives without deriving botanical identity from colour alone.
- Which citrus type is called lime here, and is the name a supplier label, local usage or supported botanical identification? definition
- What label, source-plant record or other evidence supports this fruit's identification? provenance
Citrus comparison
Tests plausible confusion with lemons and other lime-like citrus.
Identity discriminators
Uses a combination of rind, shape, internal tissue and seed observations to evaluate competing identifications.
- What observed traits distinguish this fruit from an unripe lemon or another plausible citrus alternative? boundary
- Which useful discriminating traits remain unobserved because the fruit has not been opened? measurement
Maturity and usable portions Assesses readiness and the rind, pulp and juice available for the intended use.
A lime suitable for zest may not provide enough juice, and rind colour cannot serve as a universal maturity rule.
Use-specific maturity
Interprets maturity observations against the identified lime type and desired result.
Readiness evidence
Keeps colour, firmness and internal development as separate observations before making a readiness judgement.
- What combination of colour, firmness and internal development supports readiness for this lime type? measurement
- Is the intended result juice, aromatic zest, a slice or another use with different readiness requirements? action
Portion performance
Assesses the amount and relevant qualities of the portions an agent intends to use.
Juice and rind capability
Records observed juice yield, acidity and rind aroma rather than assuming that all limes perform alike.
- How much juice does the fruit yield under the recorded extraction method, and what acidity measurements are available? measurement
- Does the usable outer rind provide the required aroma and quantity without including unwanted pith? action
Rind and pulp condition Separates appearance defects, loss of integrity and internal deterioration.
Lime condition must be judged across the protective rind and the tissues that will actually be used.
Rind barrier
Records whether surface defects affect only appearance or expose underlying tissue.
Rind defect extent
Locates scars, abrasions, splits, punctures and leakage and records their observed depth and extent.
- Where is the rind damaged, and is the defect superficial or does it expose internal tissue? measurement
- What evidence supports treating the defect as cosmetic rather than as deterioration or a breached barrier? boundary
Internal deterioration
Assesses pulp and juice condition when internal evidence is available.
Pulp condition evidence
Records dryness, tissue breakdown, abnormal discolouration or odour and preserves uncertainty where the interior is unexamined.
- After opening, what dryness, discolouration, abnormal odour or tissue breakdown is present? measurement
- Do the observations require holding or rejecting the fruit under guidance for the intended use? action
Handling and use decisions Connects fruit history, peel treatment and current physical state to justified next actions.
Using a lime's rind, squeezing its juice and retaining a cut remainder require different evidence and handling decisions.
Peel-use evidence
Determines whether the surface history supports the proposed use of zest or whole peel.
Surface treatment and preparation
Records known coatings, treatments and preparation instructions, keeping unknown treatment history explicit.
- What treatments or coatings are documented for this fruit, and what instructions accompany them? provenance
- What preparation or further evidence is required before using this fruit's zest or whole peel? action
Harvest, storage and cutting
Tracks transitions that change the fruit's handling requirements and available uses.
State-dependent next action
Combines attachment, harvest or cutting time, storage exposure and observed condition to choose the next justified action.
- Is the lime attached, harvested whole or cut, and what timing and storage exposure are known? provenance
- Which applicable guidance supports harvesting, retaining, processing or rejecting it in its present state? action
- At what processing step should extracted juice, removed peel or another output become a separately managed thing? boundary
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Kinds and varieties
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Key lime (Citrus aurantiifolia)
- Persian / Tahiti lime (Citrus latifolia)
- Kaffir / makrut lime (Citrus hystrix)
- Australian finger lime (Citrus australasica)
- Rangpur lime (Citrus limonia)
- Palestine / sweet lime (Citrus limettioides)
- Spanish / Mexican lime (same as key lime in many markets)
- Calamansi / Philippine lime (Citrus microcarpa)
- Which of these kinds and varieties hold for the sense of lime this model covers, and on what evidence? provenance
Identifiers and schemes
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Wikidata - Q13189 - lime (fruit) as a class of citrus fruit
- ITIS TSN - 28884 - Citrus aurantiifolia (Christm.) Swingle - key lime
- HS / Harmonized System - 0805.50 - Fresh or dried lemons and limes
- Codex GS1 / UN/ECE - FFV-14 - UNECE Standard for Limes
- Which of these identifiers and schemes hold for the sense of lime this model covers, and on what evidence? provenance
Standards and regulation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- UNECE STANDARD FFV-14 concerning the marketing and commercial quality control of limes (UNECE)
- Codex Alimentarius Standard for Limes (CODEX STAN 213-1999) (FAO/WHO Codex)
- EU marketing standard for citrus fruit, Regulation (EU) No 543/2011 as amended (European Commission)
- USDA AMS United States Standards for Grades of Persian (Tahiti) Limes (USDA)
- Which of these standards and regulation hold for the sense of lime this model covers, and on what evidence? provenance
Real-world use
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Fresh culinary acid: juice and zest in drinks, marinades, ceviche, and garnishes
- Processed juice, essential oil (peel), and dried peel for flavour and fragrance
- Food-service garnish and bar mixers (especially Persian limes in North America)
- Makrut lime leaves as an aromatic in Southeast Asian cooking
- Finger-lime vesicles as a high-value garnish ('citrus caviar')
- Which of these real-world use hold for the sense of lime this model covers, and on what evidence? provenance
Typical measurements
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Fruit diameter (Persian lime, extra class) - 42-67 - mm
- Juice content (minimum, commercial extra class) - 42-45 - % by mass
- Soluble solids (juice) - 7-12 - °Brix
- Titratable acidity (as citric acid) - 5-8 - g/100 mL
- Which of these typical measurements hold for the sense of lime this model covers, and on what evidence? provenance
Failure modes and hazards
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Postharvest decay (Penicillium, Geotrichum) and oleocellosis from rough handling
- Chilling injury below about 7-10 °C depending on cultivar
- Greening / Huanglongbing (Candidatus Liberibacter) destroying orchards
- Peel-oil phytophotodermatitis (bergapten/psoralens) on skin in sunlight
- Confusion with inedible or differently treated ornamental citrus
- Which of these failure modes and hazards hold for the sense of lime this model covers, and on what evidence? provenance
Regional variation
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- In the US and much of Europe, 'lime' in grocery trade is usually seedless Persian (C. latifolia); in Mexico, Florida Keys, and parts of the Caribbean, 'lime' often means key/Mexican lime (C. aurantiifolia).
- In the UK, 'lime' can also mean the linden tree (Tilia), unrelated to the fruit.
- In India and the Middle East, 'sweet lime' (mosambi / C. limettioides) is a distinct, low-acid fruit sold as lime.
- Makrut lime is primarily a leaf crop in Thailand, Indonesia, and neighbouring countries, not a juice fruit.
- Which of these regional variation hold for the sense of lime this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Reported by the breadth pass; each item needs checking against its source before it becomes normative.
- Lemon (Citrus limon) - Lemon is typically larger, yellow at commercial maturity, and lower in unique lime aroma (citral/limonene balance and presence of α-terpineol/other lime notes); botanically a different species.
- Calamansi vs key lime - Calamansi (C. microcarpa) is smaller, more orange-fleshed when ripe, and hybrid of mandarin × kumquat ancestry; key lime is rounder, greener-yellow, and C. aurantiifolia.
- Building lime (CaO / Ca(OH)2) - Mineral lime is a calcium alkali, not a fruit; separated by context, chemistry (alkaline pH vs citric acidity), and identifiers.
- Linden / lime tree (Tilia) - A temperate deciduous tree with heart-shaped leaves and fragrant flowers, not a citrus; UK common name overlap only.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of lime this model covers, and on what evidence? provenance
Sources
- Citrus fruit: Fresh fruit - limes - Commercial lime types and horticultural identity of Citrus fruit
- Lime (fruit) - Species distinguished in trade and culinary use
What the second pass must settle
- Does registry entry vr.tr.lime-q250423 denote lime fruit specifically, or does its authoritative source include the plant or another meaning?
- Which citrus taxa, hybrids and regional common-name usages belong within this entry's lime boundary?
- Which maturity indicators and expected juice, rind and seed traits are supported for each included lime type?
- What authoritative handling and deterioration guidance applies to each included type, especially after cutting or rind damage?
- What treatment documentation and preparation guidance are required for peel consumption in the intended jurisdiction and use context?