I was passing some wild cherry trees in Weardale this
afternoon and noticed this ball of solidified gum exuded from a damaged branch
of one of them. Prunus species tend to do this if they're wounded – plum and
cherry trees in particular are prone to exude gum if they’re wounded.
I vaguely remembered
that this gum is supposed to be edible and when I got home checked it out in
some early natural history books. Curiously the notion of its edibility seems to
be based on the same original account,repeated more or less verbatim in books
from the 18th., 19th., and 20th. Century (plagiarism has always been rife in natural history writing). It goes as follows:
‘Hasselquist relates that more than a hundred men, during a
siege, were kept alive for near two months without any other sustenance than a little
of this gum taken into the mouth sometimes, and suffered gradually to dissolve’.
That comes from William Withering’s 1776 treatise called A
Botanical Arrangement of all the Vegetables Naturally growing in Great
Britain..., which was the oldest source I could lay my hands on.
So who was the mysterious Hasselquist, who seems to be the
original source of this persistently plagiarised information? It turns out that
Fredrik Hasselquist (1722-1752), a Swede, was a contemporary of Linnaeus who travelled
extensively in the Middle East during his all-to-short life.
I couldn’t find the original source of Withering’s quote on
the web but did find another, even more improbable, account by Hasselquist of
the miraculous nutritional qualities of chewing gum.
It comes fronm his book entitled Voyages and Travels in the Levant in the years 1749, 50, 51, 52, containing observations in natural history,
physick, agriculture and commerce, particularly on the Holy Land, and the
natural history of the Scriptures. Remarkably, its available to read on the web, here, courtesy of Google books.
In this passage he’s referring to gum Arabic rather than
Prunus gum, but for gum chewers everywhere it's reassurance that, if you are
caught in a difficult situation, salvation may come through mastication.
‘The Abyssinians make a journey to Cairo every year, to sell
the products of their country......They must travel over terrible deserts ...
the necessities of life may chance to fail them when the journey lasts too
long. This happened to the Abyssinian caravan in the year 1750, when provisions
being consumed, when they had still two months to travel... they were obliged
to search for something amongst their merchandise, wherewith they might
support life in this extremity, and found nothing more proper that gum Arabic.
This served to support above 1000 persons for two months ... the caravan
arrived safe in Cairo, without any great loss of people either by hunger or
diseases’.
Improbable maybe, but I've seen more outrageous claims made in the popular press about purported benefits of health foods.....
Meawhile, back to cherry trees - and you can read about their beautifully fragrant wood at this excellent new blog.
Some useful bushcraft info there, Phil. It does look edible-ish. Tree resins are used in some varnish recipes, I think - wonder if this one is?
ReplyDeleteFascinating, Phil. I hope that you made it home in time for tea and didn't have to resort to any of the measures outlined above!
ReplyDeleteHM. I seem to recall from my days in the SCA that gum Arabic was one of the ingredients I needed to have to mix with my pigments to make paint. I could never find the stuff. Not sure I'd want to eat a constituent of paint, but then some paints were made with egg whites, and other use milk, and we certainly eat those readily enough.
ReplyDeleteCrikey, I'm so glad I don't have to survive on that!
ReplyDeleteNo sure, some are water soluble and some aren't - but it looks like it would make a good varnish...
ReplyDeleteIt would play havoc with my dental fillings Graeme!
ReplyDeleteI think you're right Ellen, plant gums are in a lot of artists' paints ... including watercolours, I think...
ReplyDeleteChewy stuff, toffeapple...
ReplyDeleteEdible gum is used in India for making a sweet called Karadantu, which is purported to give strength to new mothers.The sweet is chewy and delicious!Probably gum arabic is used in the preparation.
ReplyDeleteThat's fascinating lotusleaf - I could get very interested in edible plant gums. I've come across another called gum tragacanth that is apparently used to thicken sauces....
ReplyDelete