Longan
Other names dragon eye, Dimocarpus longan
Longan: moderate in fructose and sucrose; low in FODMAPs, oligosaccharides, salicylate, nickel and oxalates. If you're sensitive to any of these, check it against your profile before eating.
Intolerances
- FructoseFODMAPsModerate
The longan is a sweet tropical fruit, and sweetness on this axis is a question of the fructose-glucose balance rather than of total sugar — a balance not measured for it.
- SucroseModerate
The longan is usually eaten dried or in syrup outside its growing region, and both concentrate the sucrose the fresh fruit had.
- FODMAPsLow
Longan is one of the four fruits singled out in a survey of 43 as carrying low but detectable fructans - 0.21 to 0.46 g per 100 g across that group, with white peach, persimmon and melon. Detectable is the useful word: it is not a fruit to treat as free of them, and it is not one of the high ones either. The range belongs to the group, not to the longan alone.
Sources· 1
- Muir J. et al., J Agric Food Chem 55 (2007) 6619-6627, fructan and free fructose in 60 vegetables and 43 fruits
- OligosaccharidesFODMAPsLow
The fructans that put longan on the FODMAP axis are what this one counts too, and the figure is the same: low but DETECTABLE, in a range of 0.21 to 0.46 g per 100 g shared with white peach, persimmon and melon. A fruit measured in that range is not a fruit to read as free of them.
Sources· 1
- Muir J. et al., J Agric Food Chem 55 (2007) 6619-6627, fructan and free fructose in 60 vegetables and 43 fruits
- SalicylateLow
Fruit as a group sits on the salicylate lists, and the longan is in none of the published tables.
- NickelLow
The dried longan is where a nickel figure would matter, since drying concentrates metals by weight, and no published survey reaches this fruit.
- OxalatesLow
No published oxalate table reaches the longan, and its close relative the lychee is not measured either.
- LactoseFODMAPsNone
- Histamine (+liberators / DAO inhibitors)None
Longan is peeled and eaten fresh, like its cousin the lychee.
Sources· 1
- Maintz & Novak, Am J Clin Nutr 2007
- GlutenNone
- SorbitolFODMAPsNone
- TyramineNone
Intolerance levels are based on our documented scientific sources. See sources →
React to Fructose? Check these too
More in Fruits
Acorn squash
Apple
Apricot
Apricot canned
Aubergine
Avocado
Banana
Bell pepper
Blackberry
Blackcurrant
Blood orange
Blueberry
Frequently asked questions
Which intolerances does longan affect?
Longan is notable for fructose, sucrose, FODMAPs, oligosaccharides, salicylate, nickel and oxalates. Clear on lactose, histamine, gluten, sorbitol and tyramine.
Does longan contain fructose?
Longan contains moderate levels of fructose. The longan is a sweet tropical fruit, and sweetness on this axis is a question of the fructose-glucose balance rather than of total sugar — a balance not measured for it.
Does longan contain sucrose?
Longan contains moderate levels of sucrose. The longan is usually eaten dried or in syrup outside its growing region, and both concentrate the sucrose the fresh fruit had.
Does longan contain FODMAPs?
Longan contains only low levels of FODMAPs. Longan is one of the four fruits singled out in a survey of 43 as carrying low but detectable fructans - 0.21 to 0.46 g per 100 g across that group, with white peach, persimmon and melon. Detectable is the useful word: it is not a fruit to treat as free of them, and it is not one of the high ones either. The range belongs to the group, not to the longan alone.
Does longan contain oligosaccharides?
Longan contains only low levels of oligosaccharides. The fructans that put longan on the FODMAP axis are what this one counts too, and the figure is the same: low but DETECTABLE, in a range of 0.21 to 0.46 g per 100 g shared with white peach, persimmon and melon. A fruit measured in that range is not a fruit to read as free of them. Amounts vary by brand and recipe, so always check the label of the exact product.
Check any product in seconds
Scan a barcode with the Yllo app and see straight away whether a product fits your intolerances.