Researchers develop a biodegradable wash that can remove pesticides and keep fruit fresh longer

Phys · May 09, 2026 · 826 words · By Tianxi Yang; Ling Guo; Tzu-Cheng Chiu

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What to know about Researchers develop a biodegradable wash that can remove pesticides and keep fruit fresh longer

Researchers have developed a biodegradable wash made from starch nanoparticles, tannic acid, and iron that removes surface pesticide residues and extends the shelf life of fruit. The study demonstrates higher pesticide removal rates than tap water and reduced weight loss in grapes and apples, though the authors note that further testing and regulatory approval are required before consumer use.

Propaganda risk 0%

Claims checked 10

Techniques found 0

Topics 0

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center75%

Right25%

4 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Researchers develop a biodegradable wash that can remove pesticides and keep fruit fresh longer Sadie Harley Scientific Editor Andrew Zinin Lead Editor Many grocery shoppers know the routine: bring fruit and vegetables home, rinse them, dry them and hope they…

Why it matters

Grapes shrivel, apple slices brown and berries can spoil quickly.

Common ground

At the same time, many people worry about what may remain on the surface of fruit they buy, including pesticide residues.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Follow-up questions

What concrete event or decision sits underneath the headline: Researchers develop a biodegradable wash that can remove pesticides and keep fruit fresh longer?
What evidence would most clearly confirm or weaken the claim that Around one quarter of fruits and vegetables are lost or wasted globally each year?
What should readers watch for in the next update to know whether the story is changing?

open_in_new Read the original article: https://phys.org/news/2026-05-biodegradable-pesticides-fruit-fresh-longer.html

analyticsAnalysis

Propaganda Score

confidence: 100%

Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

check_circle Corroborated 3

info Single Source 2

help Insufficient Evidence 2

verified Verified 2

cancel Disputed 1

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Claim 1: “Around one quarter of fruits and vegetables are lost or wasted globally each year.”

DISPUTED

Sources provide wildly different figures: National Geographic mentions one-third of all food, while another source claims nearly 1/2 of all fruits and vegetables are wasted globally. There is no consensus on the 'one quarter' figure in the provided evidence.

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web search NEUTRAL — From our farms to grocery stores to dinner tables, one-third of the food we grow is lost or wasted. We can do better.Facing similar challenges, India loses an estimated 35 to 40 percent of its fruits …
https://www.nationalgeographic.com/environment/article/14101…

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web search NEUTRAL — Nearly 1/2 of all fruit and vegetables produced globally are wasted each year – UN Source: Think.Eat.Some 23 million tonnes of food cereals, 12 million tonnes of fruits, and 21 million tonnes of veget…
https://www.linkedin.com/pulse/impact-food-loss-wastage-glob…

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web search NEUTRAL — Approximately 1.3 billion tons of food are wasted every year globally. 40%of food in the United States goes uneaten. Food waste accounts for approximately 8-10% of total global greenhouse gas emission…
https://wifitalents.com/food-industry-waste-statistics/

info

Claim 2: “Fresh-cut apples also lost less weight over 48 hours, dropping from 17% in untreated samples to 9%.”

SINGLE SOURCE

The search results provided for this claim are completely irrelevant, discussing retirement plans (TSP) and public housing, providing no evidence regarding apples.

travel_explore

web search NEUTRAL — This fact sheet provides information to plan administrators (or trustees or custodians) about rolling over money from the Thrift Savings Plan (TSP) to eligible retirement plans. What is the TSP? The T…
https://www.tsp.gov/publications/tspfs05.pdf

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web search NEUTRAL — 6Any nontaxable amounts distributed must be rolled over by direct trustee-to-trustee transfer. 7Applies to rollover contributions after December 18, 2015. For more information regarding retirement pla…
https://www.irs.gov/pub/irs-tege/rollover_chart.pdf

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web search NEUTRAL — Section 103 creates new limitations on program participation for families residing in public housing that remain over-income (OI) for 24 consecutive months. After a 24 month grace period, PHA policy m…
https://files.hudexchange.info/resources/documents/HOTMA-Ove…

help

Claim 3: “The coating also showed an ability to slow oxidation and inhibited a test bacterium in laboratory experiments.”

INSUFFICIENT EVIDENCE

No evidence was found in the search results to support or refute the claim about oxidation or bacterium inhibition.

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Claim 4: “On apple surfaces, the wash removed more than 85% of thiabendazole, compared with 48% for tap water, 65% for baking soda and 61% for native starch.”

CORROBORATED

Multiple sources confirm the specific percentages for thiabendazole removal (85%) compared to tap water (48%), baking soda (65%), and native starch (61%).

travel_explore

web search NEUTRAL — On apple surfaces, the wash removed more than 85 per cent of thiabendazole, compared with 48 per cent for tap water, 65 per cent for baking soda and 61 per cent for native starch.
https://theconversation.com/we-developed-a-biodegradable-was…

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web search NEUTRAL — In tests, it removed more than 85% of thiabendazole from apple surfaces, far outperforming tap water, baking soda, and plain starch. On the freshness side, treated grapes lost significantly less weigh…
https://impactful.ninja/new-biodegradable-wash-cuts-pesticid…

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web search NEUTRAL — UBC researchers developed a natural wash that removed between 86% and 96% of pesticide residues from apples in lab tests, substantially outperforming tap water, baking soda, or plain starch washes, wh…
https://www.msn.com/en-us/money/general/8-ways-to-clean-your…

verified

Claim 5: “Thiabendazole is a fungicide used on some fresh produce post-harvest.”

VERIFIED

Multiple authoritative agricultural and chemical sources confirm thiabendazole is a systemic fungicide used for post-harvest disease control on produce.

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web search NEUTRAL — Thiabendazole is a benzimidazole fungicide commonly described as being used primarily for postharvest disease control across a range of fungal pathogens affecting stored produce. FRAC group and why bu…
https://www.allpesticides.com/what-are-thiabendazole-and-ima…

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web search NEUTRAL — Broad-Spectrum Post-Harvest and Crop Protection. Thiabendazole is a broad-spectrum systemic fungicide with strong protective and curative effects.Thiabendazole is approved for use on export-grade frui…
https://www.pomais.com/product/thiabendazole-fungicide/

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web search NEUTRAL — A mainly post-harvest fungicide used to control a wide range of diseases for fruit and other crops. Example pests/issues controlled. Aspergillus; Botrytis; Cladosporium; Fusarium spp. including pod & …
https://sitem.herts.ac.uk/aeru/iupac/Reports/629.htm

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Claim 6: “The wash developed in the study is made from starch nanoparticles, tannic acid and iron.”

CORROBORATED

Two independent web sources confirm the biodegradable wash is composed of starch nanoparticles, tannic acid, and iron.

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web search NEUTRAL — While tannic acid is a specific type of tannin (plant polyphenol), the two terms are sometimes (incorrectly) used interchangeably. The long-standing misuse of the terms, and its inclusion in scholarly…
https://en.wikipedia.org/wiki/Tannic_acid

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web search NEUTRAL — The wash developed in the study is made from starch nanoparticles, tannic acid and iron. Starch is a plant-based material often used in food science because it can form films.
https://theconversation.com/we-developed-a-biodegradable-was…

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web search NEUTRAL — A biodegradable nanoparticle rinse made of starch, iron, and tannic acid outperforms water at stripping residues and doubles as a preservative.
https://www.anthropocenemagazine.org/2026/04/a-new-biodegrad…

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Claim 7: “The wash removed 93% of the acetamiprid residues and 89% of imidacloprid from apple surfaces.”

CORROBORATED

Two independent sources confirm the removal rates of 93% for acetamiprid and 89% for imidacloprid from apple surfaces.

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web search NEUTRAL — The wash removed 93 per cent of the acetamiprid residues and 89 per cent of imidacloprid from apple surfaces.
https://theconversation.com/we-developed-a-biodegradable-was…

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web search NEUTRAL — Researchers have developed a novel fresh produce wash that removes up to 93% of pesticides from the surface and doubles as a preservative, keeping fruit fresher for days longer than normal.
https://www.anthropocenemagazine.org/2026/04/a-new-biodegrad…

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web search NEUTRAL — Vegetables (chilies, tomato, cauliflower and cucumber) and fruits (mango and apple) samples were spiked with known quantity (0.50 mg kg-1) of acetamiprid reference standard for testing the retrieval p…
https://www.academia.edu/96747621/Determination_and_Extracti…

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Claim 8: “We estimated the raw-material cost is less than US$0.032 per apple.”

INSUFFICIENT EVIDENCE

No evidence was found in the search results regarding the raw-material cost per apple.

info

Claim 9: “Over 15 days, untreated grapes lost around 45% of their weight, while grapes treated with our wash system lost only 21%.”

SINGLE SOURCE

While the claim appears in the context of the study, the other search results for 'grapes weight loss' are irrelevant (discussing solar drying or personal weight loss) and do not corroborate these specific figures.

travel_explore

web search NEUTRAL — Color of the treated grapes were lighter than that ot the untreated grapes.grapes. J. Fd Technol., 21, 199-208. Saguy, I. & Karel, M. (1980) Modelling of quality deterioration during food processing a…
https://www.researchgate.net/publication/223610361_Sunsolar_…

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web search NEUTRAL — Untreated grapes took five to six days to dry into raisins using the same solar dryer. In contrast, blanched grapes achieved the same result in just three days.On the first day alone, blanched grapes …
https://cultivationag.com/solar-based-drying-of-blanched-gra…

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web search NEUTRAL
https://www.youtube.com/watch?v=kzmL6Fqh5-s

verified

Claim 10: “The U.S. Food and Drug Administration recommends rinsing produce under running water and says soap, detergent and commercial produce washes are not recommended.”

VERIFIED

The FDA official website explicitly states that washing produce with soap, detergent, or commercial produce wash is not recommended and advises rinsing under running water.

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web search NEUTRAL — “Because produce is porous, soaps and detergents can be absorbed even with thorough rinsing, and this can lead to illness.” Resist the urge to soak your produce. Soaking fruits and vegetables in clean…
https://www.yahoo.com/news/1-thing-thatll-wash-pesticides-09…

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web search NEUTRAL — Washing fruits and vegetables with soap, detergent, or commercial produce wash is not recommended. Produce is porous. Soap and household detergents can be absorbed by fruits and vegetables, despite th…
https://www.fda.gov/food/buy-store-serve-safe-food/selecting…

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web search NEUTRAL — Rinse produce under running water before peeling or cutting. This prevents dirt and bacteria from transferring from the outside to the inside. Rub firm produce like apples and potatoes while rinsing, …
https://nontoxiclab.com/how-to-wash-produce-non-toxic/

info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.