Pear

Overview

This is a structural ingredient node created so product pages can link to a real wiki target. Occurrence values remain pending until a source is promoted for this ingredient.

Why this commodity accumulates heavy metals

Pear (Pyrus communis and related species) is a pome fruit grown on tree branches, with the edible flesh separated from the environment by a thin skin that accumulates surface-deposited contaminants more readily than the protected interior. The mechanisms governing heavy metal accumulation in pear closely parallel those documented for apple, the other primary commercial pome fruit. Lead accumulates preferentially at the fruit surface through atmospheric deposition and does not translocate efficiently from root tissue through the woody perennial stem into the fruit interior under normal conditions. Cadmium similarly accumulates at low concentrations in pear flesh because its root-to-fruit translocation through woody perennial tissue is restricted.

The historical use of lead arsenate as an orchard pesticide across the United States, United Kingdom, and parts of continental Europe during the pre-regulatory era is directly relevant to pear orchards. Lead arsenate was widely applied in pear and apple orchards from roughly the 1890s through the 1940s, leaving legacy lead and arsenic reservoirs in orchard soils that persist for decades and can still elevate soil Pb and As near the root zone. While translocation from soil Pb to fruit interior remains low, orchard soil contamination history is the primary variable affecting whether surface-deposited Pb from soil resuspension or contact contributes to whole-fruit analytical values.

Heavy metal contamination profile

Per-analyte snapshot derived from the machine-readable contamination_profile in the frontmatter above. data gap indicates the literature has been reviewed for this commodity-analyte combination and no usable occurrence data was found (a finding, not a placeholder). The Key sources column shows the top 2-3 contributing sources by year and sample size, with numbered wikilink aliases.

Routing

This node is linked from Fruit Purees.

Contamination Profile State

Per-analyte state — populated, in progress, or declared data gap — is carried authoritatively in the machine-readable contamination_profile frontmatter and the contamination-profile table above. Ingredient-level values belong here; finished-product values belong on the relevant product-category page.

FDA TDS FY2018-FY2020 Evidence

FDA’s FY2018-FY2020 Total Diet Study dataset includes this page’s routed matrix as TDS Food 85, “Pear, with peel, raw.” The normalized row-level data is stored in data/evidence/fda_tds_fy2018_2020_element_results_samples.csv, with per-food/per-analyte summaries in data/evidence/fda_tds_fy2018_2020_summary_by_food_analyte.csv. Concentrations are retained as FDA reported them, with reporting limits preserved separately; reported zeroes are not rewritten as <LOD without a source-specific rule. FY2018-FY2020 TDS Elements Analytical Results

FDA TDS FY2018-FY2020 Occurrence Values

FDA Total Diet Study FY2018-FY2020 reports prepared/composite-food concentration distributions for this ingredient as TDS food “Pear, with peel, raw” (FY2018-FY2020 TDS Elements Analytical Results). Values are in ppb-equivalent on the basis FDA reported. The full sample-level data are stored in data/evidence/fda_tds_fy2018_2020_element_results_samples.csv; per-analyte distributions in data/evidence/fda_tds_fy2018_2020_summary_by_food_analyte.csv. These distributions count as one source under Persistent Wiki Ingest Rule synthesis discipline; numerical values stay in body scratch until a second independent source is integrated.

Ranges by source, region, and variety

Pear Pb and Cd concentrations in the flesh are consistently among the lowest observed in monitored food categories, with most samples below or near analytical detection limits. Geographic variance is primarily a function of orchard soil history and proximity to industrial emission sources; no large multi-region comparative study specifically for pears is available in the current corpus. The FDA TDS FY2018-FY2020 dataset reports pear with peel (TDS Food 85, n=27) with Pb predominantly at zero, Cd predominantly at zero with low-level detection in some market samples, Ni at a median of 55 ppb (max 130 ppb), and tAs at a median of 5 ppb, reflecting the US retail distribution of commercial pears (FY2018-FY2020 TDS Elements Analytical Results). These values represent skin-on fruit, which would carry higher Pb than skin-off preparations.

Processing effects

Peeling removes the surface-contaminated skin layer and reduces Pb concentrations in the edible portion. Commercial processing of pear into juice, puree, or baby food involves peeling and core removal, effectively eliminating the surface-deposited Pb fraction. Pear juice, produced by pressing and filtering, removes particulate solids and produces a lower-metal extract than whole-fruit puree. Freezing does not alter metal concentrations. Cooking (for compote or sauce) does not appreciably remove metals, but moisture concentration during high-solids evaporation would proportionally increase per-unit-mass values.

Ingredient-derivative risk

Fresh pear is the primary raw form. Pear juice and pear concentrate are high-volume processing derivatives; pear concentrate is used in infant food beverages and as a natural sweetener, and the concentration step during evaporation would raise metal concentrations in proportion to the concentration ratio relative to fresh juice, though starting concentrations are very low. Pear puree for baby food represents the derivative with the highest regulatory scrutiny because of the infant exposure context; purees are made from peeled, cored pear and therefore reflect flesh-only metal profiles rather than skin-on values.

Mitigation options

Sourcing levers

Preferring pears from orchards with documented absence of pre-1940 lead arsenate application history and low soil Pb reduces the risk of elevated surface contamination. For infant food applications, supplier orchard-provenance declarations and periodic soil screening are the chain-of-custody verification mechanism. Given that pear baseline concentrations are already very low, most commercial sourcing is adequate; the sourcing lever is primarily relevant for high-risk provenance scenarios.

Agronomic levers

No quantified data on this lever in the current corpus; section will be expanded when relevant evidence is ingested.

Processing levers

Peeling before puree or juice production removes the surface-deposited Pb fraction. This is standard commercial practice for infant-grade pear products. Juice filtration further removes any particulate metal-bearing material that passes the pressing step.

Formulation levers

Given that pear is already a very low metal commodity, formulation levers are not a primary concern. Blending with other low-metal fruits in infant food formulations does not meaningfully change the metal profile of the final product when pear is the base.

Testing and QC levers

Lot-level ICP-MS testing of incoming pear puree or concentrate is appropriate for infant food manufacturers as a supply-chain QC step, though most commercial pear lots are expected to be well below regulatory thresholds. Third-party testing provides audit-trail documentation.

Packaging and storage levers

No quantified data on this lever in the current corpus; section will be expanded when relevant evidence is ingested.

Regulatory limits that apply

Under EU Regulation (EU) 2023/915 (EU Regulation 2023/915 maximum levels for contaminants in food), the maximum level for lead in pome fruit (including pear) is 0.10 mg/kg fresh weight, and for cadmium in pome fruit is 0.050 mg/kg fresh weight. These limits apply to fresh pear as placed on the market. For processed pear products in baby food formulations, lower Pb limits apply under the specific baby foods provisions of the same regulation.

FDA’s Closer to Zero program (FDA Closer to Zero — Program Overview) addresses lead in fruit purees and juices consumed by infants; pear is within scope as a commonly consumed infant fruit. Codex Alimentarius sets guidance levels for contaminants in fruit generally (Codex Alimentarius — Maximum Levels for Cadmium in Food). The UK post-Brexit Contaminants Regulation applies the same ML values as the EU for pear in domestic commerce.

References

Works cited in this page’s text, in first-appearance order. This is not the full corpus for this page; it is only what the prose above draws on. The complete set of sources is listed under Sources below. Each title links to its source record, which carries the ingest receipt, the extracted values, and the file hash of the document it was built from.

1. FY2018-FY2020 TDS Elements Analytical ResultsU.S. Food and Drug Administration · FDA Total Diet Study · 2022 · www.fda.govDataset

Sources

Auto-generated from source-page frontmatter. The "Used on this page for" column is populated by the orchestrator's POPULATE-SOURCE-LEGEND action; pending entries appear as *[awaiting synthesis]*.

Update history

The five most recent substantive edits to this page, classified major (evidence or structure moved), correction (a published value or statement was wrong and has been fixed), or minor (narrative rewritten without changing the underlying evidence). Each description is derived from what the edit did to this page; the linked commit is the authoritative record, routine regeneration passes are excluded, and the full version history lives in git. When DOI minting comes online (see schema docs), each entry below will also link to a version-pinned DataCite DOI.