Managing Wastes from Handling and Marketing of Fruits and Vegetables

Every year, millions of tonnes of fruits and vegetables are lost before they ever reach the consumer’s plate. The waste generated during the handling, sorting, grading, transporting, and marketing of fresh produce is staggering – and it comes with real environmental and economic consequences. But here’s what many people overlook: much of this waste isn’t truly “waste” at all. It contains valuable nutrients, bioactive compounds, and organic matter that can be converted into useful by-products. Understanding what types of waste are produced – and how to manage them – is the first step toward building a more sustainable food system.

How much fruit and vegetable waste are we really talking about? 🔗

The scale of waste generation in the fruit and vegetable sector is significant. According to the UN Food and Agriculture Organization (FAO), losses and waste in fruits and vegetables are the highest among all food categories, reaching up to 60% in some cases. Processing operations alone can produce by-products that make up about 25-30% of the total commodity group.

In developing countries like India, the situation is particularly acute. A study by NABARD (2020) found that postharvest handling is responsible for 20-30% of losses across stages like storage, grading, packaging, shipping, and marketing. Research under India’s All India Coordinated Research Project (AICRP) on postharvest technology further breaks this down: about 13% of losses happen during farm-level operations like harvesting, sorting, grading, and packing; around 6% during farm storage; and roughly 12% at wholesale and retail levels. In total, about one-third of horticultural produce in India never reaches the consumer.

Types of waste generated from fruits 🔗

Fruit handling and marketing operations produce a wide range of organic waste. The specific type depends on the crop, the stage of processing, and the method of handling. Here are the most common categories:

Peels and rinds: These are among the most voluminous fruit wastes. Banana peels, citrus rinds, mango peels, and apple skins are generated in massive quantities during both domestic consumption and industrial processing. According to a review published in Molecules (PMC), fruit and vegetable processing alone generates peel waste amounting to 25-30% of the total product weight.

Cores and seeds: Apples, pears, mangoes, and stone fruits like peaches produce cores and seeds that are typically discarded. These parts often contain oils, phenolic compounds, and dietary fibre that have commercial potential.

Trimmings and stems: During sorting and grading operations at wholesale markets and packhouses, damaged portions are trimmed off. Stems from grapes, cherries, and similar fruits are routinely removed.

Pomace: The residue left after juice extraction from fruits like apples, grapes, and citrus is called pomace. It is composed of skin, pulp, seeds, and stem fragments. Pomace is one of the most studied fruit by-products because of its rich content of bioactive compounds.

Overripe, blemished, and diseased fruits: Fruits that are too ripe, visually damaged, or affected by fungal or bacterial infections are rejected during grading and marketing. In wholesale markets, these form a considerable proportion of daily waste.

Types of waste generated from vegetables 🔗

Vegetable waste follows a similar pattern but varies by crop type and part consumed. The major categories include:

Peels and skins: Potatoes, carrots, onions, and gourds all produce large amounts of peel waste. Onion skins, for instance, are rich in quercetin and other flavonoids, making them a potential source for nutraceutical extraction.

Seeds: Seeds from tomatoes, pumpkins, peppers, and melons are commonly discarded during processing. Many of these contain significant amounts of protein, oil, and antioxidants.

Trimmings and leaves: Outer leaves of cabbage and cauliflower, tops of carrots and radishes, and leafy trimmings from various vegetables add up to a large volume of organic waste, particularly at wholesale market yards.

Vines and pods: Pea pods, bean shells, and the vines from cucurbit crops (such as pumpkin and cucumber) are frequently left behind in the field or discarded during market preparation.

Pomace: Tomato pomace – the residue from tomato paste and juice production – is one of the largest single sources of vegetable processing waste globally. It is composed of skin, seeds, and a small amount of pulp.

Packaging material waste in the supply chain 🔗

Waste from fruits and vegetables isn’t limited to the produce itself. The packaging and transportation stages contribute significantly to overall waste generation. In many developing countries, traditional packaging materials are still widely used. These include:

Gunny bags (jute sacks): Commonly used for transporting root vegetables like potatoes, onions, and carrots. They are durable but can cause physical damage to softer produce due to rough handling during loading and unloading.

Bamboo crates and wooden boxes: Frequently used in tropical regions for transporting fruits like mangoes, bananas, and papayas. After a few uses, these crates become damaged and end up as solid waste at market yards.

Plastic sacks and polyethylene bags: These are increasingly common for retail-level packing. While cheap and convenient, they contribute to persistent plastic pollution when discarded improperly.

Corrugated fibreboard (CFB) boxes: Used for premium produce, CFB boxes are more protective but also become waste after single use, especially in long-distance supply chains.

The waste from these packaging materials, when mixed with organic produce waste at market yards and collection centres, complicates disposal. Segregation at source is essential but rarely practised at scale in many regions.

Environmental impact of improper waste disposal 🔗

When fruit and vegetable waste is dumped in landfills or left to decompose in open areas – as commonly happens at wholesale market yards – it creates multiple environmental problems. The organic matter decomposes anaerobically, producing methane, a greenhouse gas roughly 80 times more potent than carbon dioxide in the short term. According to a ResearchGate review on fruit and vegetable waste management, diverting organic waste from landfills helps minimise methane emissions and supports a circular economy.

Decomposing waste also produces leachate – a liquid that seeps into soil and groundwater, potentially contaminating water sources. The foul odour and pest attraction at open dumping sites create public health hazards in nearby communities. Mixed waste that includes plastic packaging materials adds yet another layer of pollution, as plastics do not biodegrade and persist in the environment for hundreds of years.

Converting waste into valuable by-products 🔗

The good news is that most fruit and vegetable waste is rich in organic matter and bioactive compounds, making it suitable for conversion into several useful products.

Composting 🔗

Composting is one of the simplest and most widely practised methods for managing organic waste. Aerobic composting involves breaking down waste at high temperatures (50-65°C), which kills pathogens and rapidly degrades organic matter. The resulting compost is a nutrient-rich soil amendment that improves soil structure, water retention, and microbial activity. Fruit and vegetable waste can be composted directly or mixed with other organic material like livestock manure for better results.

Animal feed 🔗

Many types of fruit and vegetable waste are safe and nutritious enough to serve as alternative feed ingredients for livestock. Waste such as banana peels, citrus pulp, carrot tops, and cabbage leaves can supplement the diet of cattle, sheep, goats, and poultry. Research has shown that including fruit and vegetable waste in animal diets can reduce methane and nitrous oxide emissions from livestock, making it an environmentally friendly feeding strategy. However, care must be taken to ensure the waste is free from pesticide residues and pathogens before feeding it to animals.

Biogas production 🔗

Anaerobic digestion – the breakdown of organic matter by bacteria in the absence of oxygen – converts fruit and vegetable waste into biogas, a renewable energy source primarily composed of methane and carbon dioxide. According to the Environmental and Energy Study Institute (EESI), biogas systems recycle organic materials into energy and valuable soil products. The liquid and solid residues left after digestion, called digestate, can be used as organic fertiliser on farms. Biogas production is especially viable at large wholesale markets and food processing units where waste generation is concentrated and consistent.

Extraction of bioactive compounds 🔗

Fruit and vegetable waste is a rich source of bioactive compounds like polyphenols, carotenoids, dietary fibre, vitamins, enzymes, and essential oils. Modern extraction technologies – including microwave-assisted extraction (MAE) and supercritical fluid extraction (SFE) – allow these compounds to be recovered from waste streams for use in the food, pharmaceutical, and cosmetics industries. For example, grape pomace is a well-known source of polyphenols, while citrus peels yield pectin and essential oils with wide industrial applications.

Bioplastics and packaging 🔗

In an interesting circular approach, waste from fruits and vegetables is now being explored as a raw material for producing biodegradable packaging. Biopolymers such as pectin, starch, cellulose, and dietary fibre extracted from waste can be used to develop edible films and coatings, offering a sustainable alternative to conventional plastic packaging. This approach simultaneously addresses two problems: organic waste accumulation and plastic pollution.

Practical strategies for better waste management 🔗

Effective management of handling and marketing waste requires action at multiple levels:

Segregation at source: Separating organic waste from packaging waste at the market or packhouse level makes downstream processing far more efficient. Organic waste can go to composting or biogas units, while packaging material can be recycled or repurposed.

On-site composting at wholesale markets: Many large agricultural produce markets (mandis) in India and other developing countries generate tonnes of waste daily. Installing decentralised composting units at these locations can convert waste into compost locally, reducing transport costs and landfill pressure.

Cold chain infrastructure: Investing in cold storage and refrigerated transport reduces the amount of produce that spoils before reaching the market. Fewer losses mean less waste to manage in the first place.

Improved packaging: Switching from traditional containers like bamboo crates and gunny bags to better-designed, reusable packaging materials (such as returnable plastic crates or ventilated CFB boxes) reduces both produce damage and packaging waste.

Policy and awareness: Government initiatives that incentivise waste-to-value conversion – through subsidies for biogas plants, composting facilities, and by-product extraction units – can accelerate adoption. Training farmers, aggregators, and market operators on waste management practices is equally important.

The bigger picture: waste as a resource 🔗

The global fruit and vegetable processing industry generates massive amounts of by-products – seeds, peels, pulp, and pomace – that are increasingly being recognised not as waste, but as valuable raw materials. As the Springer overview on FVPWs notes, sustainable management strategies that align with circular economy principles can turn these by-products into resources for food, pharmaceutical, and cosmetic applications. The shift in perspective – from “disposal problem” to “resource opportunity” – is at the heart of modern waste valorisation.

For a country like India, where horticultural losses amount to nearly 50 million metric tonnes annually and the economic impact runs into billions of dollars, better waste management isn’t just good environmental practice – it’s an economic imperative.

What do you think? Could decentralised composting and biogas units at local market yards be a practical solution for your region? And how might the extraction of bioactive compounds from everyday kitchen and market waste change the way we think about the value of what we throw away?

References

1. https://ift.onlinelibrary.wiley.com/doi/10.1111/1541-4337.12330
2. https://blog.sathguru.com/food-and-retail/harvesting-hope-tackling-post-harvest-losses-in-indias-fruit-and-vegetable-industry/
3. https://www.intechopen.com/chapters/79725
4. https://pmc.ncbi.nlm.nih.gov/articles/PMC7356603/
5. https://www.sciencedirect.com/science/article/abs/pii/S0168169922002538
6. https://www.researchgate.net/publication/383131629_Fruit_and_vegetable_waste_management
7. https://www.sciencedirect.com/science/article/abs/pii/S0956053X21002488
8. https://www.eesi.org/papers/view/fact-sheet-biogasconverting-waste-to-energy
9. https://pmc.ncbi.nlm.nih.gov/articles/PMC10217424/
10. https://www.mdpi.com/2813-0391/2/3/15
11. https://link.springer.com/chapter/10.1007/978-1-0716-4763-9_1