categoryZCrops Crops List 

RASPBERRY

Rubus idaeus

Rose Family [Rosaceae]  

Flowers:
month8may month8jun month8june month8jul month8july month8aug

Berries: berryZpossible        berryZred  (edible, a fruit)
berry8jul berry8july berry8aug

category
category8Crops
 
status
statusZnative
 
flower
flower8white
 
morph
morph8actino
 
petals
petalsZ5
 
stem
stem8round
 
stem
stem8spines stem8thorns
spines
contact
contactZlowish
 

8th July 2010, East Lancs Rd, Worsley, Mcr. Photo: © RWD
Garden escape spreading beneath deciduous trees beside arterial road.


8th July 2010, East Lancs Rd, Worsley, Mcr. Photo: © RWD
Trefoil leaves.


8th July 2010, East Lancs Rd, Worsley, Mcr. Photo: © RWD
Leaves apple-green, pronouncedly crimped on the veins, with forward-pointing teeth. Stems almost bereft of spines.


8th July 2010, East Lancs Rd, Worsley, Mcr. Photo: © RWD
Flowers just turning to multi-lobed fruits.


8th July 2010, East Lancs Rd, Worsley, Mcr. Photo: © RWD
Fruits red, edible, comprising few spheres (druplets) , unlike Blackberry which have many more druplets. [Blackberry fruits are red at first, but soon turn black].


8th July 2010, East Lancs Rd, Worsley, Mcr. Photo: © RWD
Five light-coloured backwardly directed isosceles-triangular shaped sepals surrounded by a ring of now brown stamens and anthers. Any spines are weak, and few (top middle). Druplets coated in felt-like short fine hairs.


Not to be confused with : Creeping Raspwort [a plant of similar name belonging to the Water-Milfoil Family]

Some similarities to : Loganberry (Rubus loganbaccus) but Loganberry has fruits shaped like prolate spheroids rather than the hemi-spherical of Raspberry. More similar to Wineberry (Rubus phoenicolasius), but Wineberry has pink flowers rather than off-white and much longer sepals.

Uniquely identifiable characteristics

Distinguishing Feature : tastes of Raspberries!

Grows in woods, on scrub, on heaths and also as an escapee from allotments and gardens. When ripe, the fruits are easily picked off.

The fruit is eminently edible, or even delicious.

FRAGRANT VOLATILES

Over 200 volatile compounds have been identified in fresh wild strawberries and most contribute to the aroma of Raspberries, the main ones include:


Furaneol (aka Strawberry Furanone Pineapple Ketone or 2,5-dimethyl-4-hydroxy-3(2H)furanone) which is also found in Strawberries and in Pineapples where it is responsible for the smell of fresh pineapples),

NorFuraneol (aka 5-methyl-4-hydroxy-3(2H)furanone)

Mesifurane (aka 2,5-dimethyl-4-methoxy-3(2H)furanone)

Raspberry Ketone ( aka 1-(4-HydroxyPhenyl)- -3-Butanone) is a phenolic ketone and characterises the smell of raspberry, working in tandem with the two ionones below. It has an intense, warm and penetrating character reminiscent of raspberry jam.




The α-Ionone in within Raspberry is the pure (R)-(+)-(E) enantiomer, so this may be used as the forensic compound for preserves - detection of any other enantiomers signifies the presence of artificial aromas which are manufactured in their racemic form, a mixture of all enantiomers.

The fruit itself contains the dimeric ellagitannin Ellagic Acid, which is a dilactone of HexaHydroxyDiphenic Acid. Ellagic Acid is an anti-oxidant.

Two other ellagitannins are contained in the fruit, Sanguiin H-6, which is a dimer of a much larger molecule than is Ellagic Acid, and Lambertianin which is a trimer containing the same monomer.

It also contains ethyl 5-hydroxyoctanoate and ethyl 5-hydroxydecanoate, the latter two being unstable. Eleven terpenes have also been found.


  Rubus idaeus  ⇐ Global Aspect ⇒ Rosaceae  

Distribution
 family8Rose family8Rosaceae

 BSBI maps
genus8Rubus
Rubus
(Brambles)

RASPBERRY

Rubus idaeus

Rose Family [Rosaceae]  

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