- Published
Eating fruit and vegetable scraps such as peels and stalks could provide a health boost that most of us are missing, say UK researchers, external.
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external → publish → us
They say scraps are an overlooked source of dietary fibre and are encouraging people to try "root-to-tip" eating, including watermelon rind, pineapple core and butternut squash seeds.
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scraps → say → rind
Most adults do not get enough fibre.
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adults → get → fibre
Official figures, external show only 4% meet the recommended 30g a day, despite its well-known benefits for gut health.
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% → show → health
Fibre aids digestion, helps you feel fuller for longer and is linked to a lower risk of heart disease and bowel cancer.
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you → aid → disease
As a rule of thumb, the skins of fruit and veg pack more fibre than the insides.
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skins → pack → insides
Eating a kiwi with the skin on, external provides 50% more fibre than having a peeled one, for example.
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external → eat → example
For their study, the scientists at King's College London analysed 12 raw or uncooked fresh foods - beetroot, bell pepper, broccoli, butternut squash, cauliflower, celeriac, curly kale, fennel, kiwi fruit, leek, pineapple and watermelon.
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scientists → analyse → foods
They found many discarded parts contained more fibre than the sections people typically eat.
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people → find → sections
For example:
watermelon rind contained 2.10g of fibre per 100g – roughly equivalent to the fibre in a slice of wholemeal bread
butternut squash skin and seeds contained 9.25g per 100g – nearly as much fibre as a bowl of bran flakes
pineapple skin and core contained five times more fibre than the flesh
broccoli stalks contained fibre, although a bit less than the florets
Fibre is essential for your gut to work properly and helps prevent constipation.
Project lead Dr Rachel Gibson said the findings suggested people are throwing away a significant amount of fibre.
"
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people → contain → fibre
This isn't just a nutritional loss, it's also a financial one; you're effectively throwing away a substantial portion of what you've paid for."
Banana peel curry?
The college has been experimenting in its canteen, external, offering staff and students root-to-tip meals, such as banana skin curry.
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college → throw → curry
At home, people might want to try leaving skins on kiwi fruit, using broccoli stalks in stir-fries, or adding bell pepper seeds to dishes, the researchers suggest.
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researchers → want → dishes
While cooking can change the fibre content, it doesn't usually destroy it all.
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it → change → it
Steaming, microwaving, or quick sautéing tends to preserve nutrients best.
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Steaming → tend → nutrients
Dr Gibson said: "This isn't about perfection and this isn't about forcing people to eat unpalatable food – it's about recognising the nutritional value in components we've been conditioned to discard."
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we → say → components
She acknowledges some may be hesitant to try.
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some → acknowledge → ?
Some diners raised concerns during the canteen trial.
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diners → raise → trial
Over the nine-week period, 'root-to-tip' dishes made up a third of total daily hot menu sales at the university.
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dishes → make → university
Those choosing the new dishes were less likely to finish their meals than diners eating from the conventional menu.
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Those → choose → menu
Kirsten Jackson, a dietitian with the British Dietetic Association who specialises in irritable bowel syndrome (IBS), says the food hacks are useful as long as produce is washed thoroughly.
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produce → specialise → syndrome
She suggests blending pineapple cores into smoothies, but says the tough skins are not something she would recommend.
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she → suggest → smoothies
Some stalks may need to be cooked or finely chopped to make them more palatable, she adds.
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she → need → ?
"Just because a broccoli stalk doesn't fit into tonight's meal doesn't mean it needs to go in the bin.
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it → fit → bin
Chop it up, freeze it and add it to a soup or stir-fry another day," she said.
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she → chop → soup
She advises increasing fibre intake gradually to avoid bloating, noting that people with IBS may find it harder to tolerate.
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it → advise → IBS
And there are some things to avoid entirely, said the British Nutrition Foundation.
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Foundation → be → ?
Green potatoes and rhubarb leaves contain toxic compounds, while tough stalks and seeds may not be suitable for young children.
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stalks → contain → children
The Aporia
