Overview
Source-grounded narrative on this page is populated incrementally from the routed source pages; values for analytes marked as data gap below have not yet accumulated 2+ A-tier contributing sources.
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.
| Analyte | Coverage | Typical (ppb) | Confidence | Key sources |
|---|---|---|---|---|
| Pb | n=2 | 12–100 | low | — |
| Cd | n=2 | 33–200 | low | — |
| iAs | data gap | — | — | — |
| tAs | data gap | — | — | — |
| tHg | data gap | — | — | — |
| Ni | n=2 | 11–500 | low | — |
| Al | data gap | — | — | — |
| Cr | n=2 | 111–500 | low | — |
| Sn | data gap | — | — | — |
| U | data gap | — | — | — |
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.
- Heavy Metal Contamination in Foods: Advances in Detection Technologies, Regulatory Challenges, Health Risks, and Implications for Sustainable Food SafetyReview
- Action Levels for Lead in Processed Food Intended for Babies and Young Children: Guidance for IndustryGuidance
- General Standard for Contaminants and Toxins in Food and Feed (CXS 193-1995)Government
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]*.
| # | Citation | Year | Type | Used on this page for |
|---|---|---|---|---|
| 1 | Islam et al. 2024. A Systematic Review on Heavy Metals Contamination in Bangladeshi Fruits and Their Associated Health Risks, Environmental Health Insights | 2024 | Review | BD As, Cd, Pb, Cr, Ni, tHg occurrence in Systematic review of 10 cross-sectional studies on heavy metals in Bangladeshi fruits (2012–2022), covering banana, mango, jackfruit, papaya,… (n=10) |
| 2 | Kumar et al. 2022. Lead (Pb) Contamination in Agricultural Products and Human Health Risk Assessment in Bangladesh, Water, Air, & Soil Pollution 233:257 | 2022 | Peer-reviewed | BD Pb occurrence in Published Pb concentration data for commonly consumed agricultural foods and food products in Bangladesh. (n=Literature survey covering three cereals, five pulses, ten fruits, and 34 vegetables/other agricultural food items) |
| 3 | Rahim et al. 2020. Analysis of Toxic Heavy Metal Content of the Most Widely Consumed Fruits, Journal of Physical Science | 2020 | Peer-reviewed | PK Cr, Ni, Cd, Pb occurrence in Fruit samples of 11 varieties (apple, apricot, banana, cherry, grapes, guava, lemon, mango, orange, peach, pomegranate) collected from… (n=308) |
| 4 | Blunden et al. 2003. Tin in canned food: a review and understanding of occurrence and effect, Food and Chemical Toxicology, Vol. 41, Issue 12, pp. 1651-1662 | 2003 | Peer-reviewed | UK/EU/US Sn occurrence in Narrative review of tin-in-canned-food literature commissioned by ITRI Ltd (the International Tin Research Institute) compiling published primary clinical,… |
Why this commodity accumulates heavy metals
Guava (Psidium guajava) is a tropical fruit cultivated dominantly in India, Pakistan, Mexico, Brazil, Egypt, Thailand, and across Latin America and Southeast Asia. Guava plants accumulate moderate heavy-metal load via soil-uptake and atmospheric deposition; warmer growing climates with documented industrial and agrochemical-contamination histories drive higher baselines than temperate fruit production. Guava is consumed fresh, as juice, in purees, and in dried/dehydrated products including guava paste (an important confectionery ingredient in Latin American cuisine). The HMTc panel concerns for guava are Pb and Cd at moderate levels reflecting tropical-region production baselines.
The data gap status across analytes in the body table reflects sparse guava-specific quantitative data in the current routing audit. The synthesis is grounded in the broader tropical-fruit and tropical-vegetable literature in Hernández-Montoya 2026 and the fruits aggregate page.
Ranges by source, region, and variety
Variance within guava tracks source-region (Indian, Pakistani, Mexican, Brazilian, Egyptian guava production sit at different baselines reflecting regional soil-and-irrigation profiles), cultivar (white-flesh and pink-flesh guava cultivars, with limited documented per-cultivar metal differences), and farming system (commercial orchard vs smallholder production, with smallholder production in industrial-region peripheries often carrying elevated Pb).
Processing effects
Guava processing for fresh-market consumption involves harvest and minimal handling. Industrial processing for guava juice involves pressing or pulping, screening, optional pasteurization, and packaging. Pressing partitions metals between juice and solid fractions. Guava puree production for fruit-purees and baby food retains the full source-fruit metal load. Guava paste (cooked-concentrated guava with sugar) concentrates per-mass metals via water removal. Dried/dehydrated guava concentrates per-mass metals proportionally.
Ingredient-derivative risk
Guava derivatives include fresh guava, guava juice, guava nectar, guava puree (for infant feeding and bakery applications), guava paste (confectionery), and dried/dehydrated guava. Concentrated and dried products carry per-mass metals at higher levels than fresh fruit. Guava is also incorporated into mixed tropical-fruit products (smoothies, fruit cocktails, tropical-blend juices) where it contributes a fraction of the total per-product metal load.
Mitigation options
Sourcing levers (Supply-chain screening) are dominant for guava given tropical-region upstream supply variability. Origin-region specification favoring documented low-soil-Pb production areas; supplier audit programs verifying agrochemical-use history and irrigation-water quality; and contractual specification of Pb/Cd ceiling on incoming guava.
Agronomic levers (Agronomic mitigation) operate at the guava-cultivation stage. Soil pH management; avoidance of high-Pb agrochemical inputs; and irrigation-water specification.
Processing levers (Processing mitigation) include processing-equipment material specification; washing optimization for surface-Pb removal; pulp-removal optimization to partition metals to solids in juice production.
Formulation levers (Formulation mitigation) include substituting guava with lower-Pb tropical fruits where the matrix permits; reducing the guava fraction in tropical-fruit blends; juice-to-water dilution in guava-flavored beverage formulations.
Testing and QC levers (Testing and quality-control mitigation) include lot-level Pb, Cd testing on incoming guava. ICP-MS is the standard analytical platform.
Packaging and storage levers (Packaging and storage mitigation) include can-lining specification for canned guava products; aseptic carton, glass, or PET packaging for guava juice eliminates Sn migration.
Regulatory limits that apply
- eu-2023-915 — EU Reg. 2023/915 sets maximum levels for Pb at 100 ppb (general fruit); Cd at 50 ppb (general fruit). These apply to guava.
- FDA Closer to Zero baby-food Pb action levels: 10 ppb for fruit purees including guava-containing infant fruit products (FDA 2025).
- Codex Alimentarius CXS 193-1995 (Codex 1995) sets fruit-category limits aligned broadly with EU.
- California Prop 65 (california-prop65) Pb MADL applies to guava products sold in California.
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.
| Commit | Date | Change | Description |
|---|---|---|---|
| e317189 | 2026-08-11 | correction | 3 sources added; 11 sections added; narrative text revised |