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judyofthewoods

Joined: 29 Jan 2005
Posts: 804
Location: Pembrokeshire

Posted: Mon Apr 11, 05 4:28 pm Post subject:

[quote="bagpuss]

Much of fruit sugar is fructose

[/quote]

The sugar in Jerasalem artichokes is not fructose. Here an excerpt from N. Walker's 'Fresh Vegetable and Fruit Juices'

Quote:

When raw this vegetable contains the enzyme inulase and a large amount of inulin. Inulin is a substance resembling starch and is converted into levulose by the enzyme inulase. It is therefor a tuber which diabetics can eat with impunity. Its juice is very beneficial and palatable, whether taken alone or with carrot juice.

Centrifugal juicers have very fine teeth which rasp the produce, and a filter through which the juice is spun. This means that any fibrous material is likely to clog the teeth very quickly, and in my experience greens don't juice very well. All but the most efficient auger type like the Sampson(and similar) leave a fair bit of juice in the pulp, even if the pulp feels relatively dry, and would yeald more juice when put into a juice press.
I'm not sure whether the acids actually prevent oxidation, but they do prevent the browning of juices from apple and carrot. I usually put some lemon or lime in with mine not just for flavour and nutrients but also to prevent the browning, and possibly oxidation.
Not totally sure either on the point that fast juicing heats up the juice and damages it, but thats what I have read in several books and sales talk for slow juicers like the Sampson.

bagpuss

Joined: 09 Dec 2004
Posts: 10507
Location: cambridge

Posted: Mon Apr 11, 05 7:24 pm Post subject:

judyofthewoods wrote:

The sugar in Jerasalem artichokes is not fructose. Here an excerpt from N. Walker's 'Fresh Vegetable and Fruit Juices'

Quote:

levulose is a synonym for fructose

and

inulin is to fructose what starch is to glucose, its a poly saccharide whose indivudual units are fructose so I suspect the same rules apply just a the same rules really apply to starch as do to glucose

cab

Joined: 01 Nov 2004
Posts: 32429

Posted: Mon Apr 11, 05 7:59 pm Post subject:

Yeah, levulose is fructose, but inulin is not equal to starch. Both are storage polymers, starch being one made of glucose residues and inulin being a fructose one, but we're MUCH better at breaking down starch than inulin, which is largely broken down by microbes in our guts (producing rather a lot of gas in the process).

I suspect that although you get a fair whack of fructose from such tubers, it takes much longer to get in.

For the record, sucrose (table sugar, beet sugar, cane sugar) is a dimer made up of one glucose and one fructose. So cane sugar gives you fructose and glucose.

Mrs Fiddlesticks

Joined: 02 Nov 2004
Posts: 10460

Posted: Tue Apr 12, 05 1:06 pm Post subject:

i was reading that until you get use to it you shouldn't mix veg and fruit juices ( apart from carrot) as they work in a different way in the body and there may be 'discomfort' shall we say delicately!!

I liked the look of the auger type juicers, but aren't they a price!! I thought of trying this simple juicer 1st (£23) to see how we get on. Bought some root ginger to try and add to the mix today!

cab

Joined: 01 Nov 2004
Posts: 32429

Posted: Tue Apr 12, 05 1:11 pm Post subject:

bagpuss wrote:

that was what I was going to suggest or something very similar

it does remind me though I should give the juicer which came with the minder and shredder on the kitchen aid a go

There's a juicer on the kitchen aid? Wow. Is there anything that machine can't do? Does it go out and do the shopping for you aswell?

jema
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 28139
Location: escaped from Swindon

Posted: Tue Apr 12, 05 1:11 pm Post subject:

Fiddlesticks Julie wrote:

I liked the look of the auger type juicers, but aren't they a price!! I thought of trying this simple juicer 1st (£23) to see how we get on. Bought some root ginger to try and add to the mix today!

That was exactly my feeling. I am also not at all convinced by the claims of massive superiority of the auger ones.

bagpuss

Joined: 09 Dec 2004
Posts: 10507
Location: cambridge

Posted: Tue Apr 12, 05 1:17 pm Post subject:

cab wrote:

There's a juicer on the kitchen aid? Wow. Is there anything that machine can't do? Does it go out and do the shopping for you aswell?

unfortunately it lacks the motility and being american I am not sure what it would come back with

sean
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 42208
Location: North Devon

Posted: Tue Apr 12, 05 1:31 pm Post subject:
You'd get all the really good stuff like marshmallow fluff and premixed peanut butter and jelly. And grits, maybe.

cab

Joined: 01 Nov 2004
Posts: 32429

Posted: Tue Apr 12, 05 1:39 pm Post subject:
What ARE grits?

sean
Downsizer Moderator

Joined: 28 Oct 2004
Posts: 42208
Location: North Devon

Posted: Tue Apr 12, 05 1:43 pm Post subject:

cab wrote:

What ARE grits?

I've just looked them up. Apparently they are "Dried and hulled maize kernels, coarsely ground and prepared for consumption in various ways, including puddings and breads. Hominy grits are finer ground or double ground."

Mrs Fiddlesticks

Joined: 02 Nov 2004
Posts: 10460

Posted: Tue Apr 12, 05 1:46 pm Post subject:

sean wrote:

You'd get all the really good stuff like marshmallow fluff and premixed peanut butter and jelly. And grits, maybe.

spotted Marshmallow Fluff in Tesco's the other day.. can't be healthy

bagpuss

Joined: 09 Dec 2004
Posts: 10507
Location: cambridge

Posted: Tue Apr 12, 05 2:02 pm Post subject:

Fiddlesticks Julie wrote:

spotted Marshmallow Fluff in Tesco's the other day.. can't be healthy

I think it is probably a throughly artificial food stuff but not as artificial as twinkies

that being said given I like candy floss and marshmallows I probably would like it

ButteryHOLsomeness

Joined: 03 Apr 2005
Posts: 770

Posted: Tue Apr 12, 05 4:06 pm Post subject:

bagpuss wrote:

cab wrote:

There's a juicer on the kitchen aid? Wow. Is there anything that machine can't do? Does it go out and do the shopping for you aswell?

unfortunately it lacks the motility and being american I am not sure what it would come back with

oi! i resemble that remark!!!

ButteryHOLsomeness

Joined: 03 Apr 2005
Posts: 770

Posted: Tue Apr 12, 05 4:07 pm Post subject:

sean wrote:

You'd get all the really good stuff like marshmallow fluff and premixed peanut butter and jelly. And grits, maybe.

grits are NOT good

grits are the horrid little insides of corn that don't even have the decency to taste nice like sweet corn... they feel like they should be coming up not going down

corn porridge, YUCK!

though i am partial to other southern food like ham and collard greens, pecan pie and blackeyed peas with sweet cornbread mmmmm

ButteryHOLsomeness

Joined: 03 Apr 2005
Posts: 770

Posted: Tue Apr 12, 05 4:09 pm Post subject:

sean wrote:

cab wrote:

What ARE grits?

hominy is worse, tastes like lye

and don't even get me started on succotash

sheesh, what is it with people over here always dragging up the worst of american culture like jerry springer, george w bush and grits... honestly

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