New fake cheese to satisfy cheese haters?
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Burcu Kiziloz M, Cumhur O, Kilic M.
Development of the structure of an imitation
cheese with low protein content.
Food Hydrocolloids
2009; 23: 1596-1601.
Istanbul Technical University, Department of
Food Engineering, 34469 Istanbul, Turkey
Abstract
The structure of an imitation cheese with
low protein content was developed by replacing
80% of the rennet casein with waxy maize starch
and κ-carrageenan in the formula. Starch
was partially hydrolyzed by using a fungal
α-amylase to provide meltability.
Formulation studies were carried out to obtain
meltability and textural properties of a hard
cheese with high protein content in the
developed cheese. Response surface method was
used to determine the effects of
α-amylase and κ-carrageenan on the
physical properties of the cheese. Hardness,
cohesiveness and springiness of the cheese were
affected positively by κ-carrageenan and
negatively by α-amylase. Square of the
meltability scores was used to explain the
effects of components on meltability of the
cheese. Square of the meltability was affected
positively by α-amylase and negatively by
κ-carrageenan. A formula was determined
by using multiple response optimization method
that would provide hardness, cohesiveness and
meltability in the developed cheese similar to
those of the high protein counterpart used as
targets. Results obtained from a trial cheese
produced according to the determined formula
confirmed that the values of physical
properties estimated by the optimization can be
achieved.
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COMMENT: Just
when it seems that 'food scientists' couldn't make
things worse by mucking about with our traditional
foods, along comes a new abomination.
New research from Turkey
suggests that replacing rennet casein with waxy maize
starch and carrageenan could produce low-protein
imitation cheeses. If they then add amylase, an enzyme
our bodies use to break down starches, they might be
able to balance the physical properties of the
‘cheese’.
“Results obtained from
a trial cheese produced according to the determined
formula confirmed that the values of physical
properties estimated by the optimization can be
achieved,” wrote the researchers in the journal
Food Hydrocolloids.
The idea behind producing such
imitation cheeses, say the researchers, is for
increasing functionality “such as reduction of
fat content, enhancement of nutritive value by addition
of vitamins and minerals and reduction of production
cost by using plant-based ingredients." They go on:
“Furthermore, they can be produced with a
modified composition for special consumer groups with
dietary limitations. This kind of products can be
produced for patients with phenylketonuria if the
protein or phenylalanine content is reduced,”
they said.
“Cheese cannot be
consumed by these patients due to its high protein
content. Food choices of these patients would be
diversified by low protein containing imitation
cheese.”
Fake cheese formula
The Turkish researchers
formulated imitation cheese by replacing 80 per cent
rennet casein, the preferred protein source for such
products because of an improved flavour, with partially
hydrolyzed waxy maize starch (Cerestar, Cargill) and
kappa-carrageenan (Type HGE, MSC). The formula was
further optimised using alpha-amylase (Fungamyl,
Novozymes).
The amylase and carrageenan
were found to have opposite effects on the physical
properties of the cheese, particularly for meltability,
hardness and cohesiveness. So a balance between the two ingredients had to be
established to obtain highest possible values of all the response
variables,” wrote the researchers.
Alternative cheeses
Low-fat cheese is
growing strongly in popularity as consumers
increasingly focus on so-called 'healthy' diets. More
than twice as many new low-fat cheeses were introduced
in 2007 compared to 2005, according to data supplied by
market research firm Mintel. In the last
quarter of 2007, nearly 90 new low-fat cheese products
were introduced globally.
And, as has become quite
obvious over the past couple of decades since we were
conned into thinking that 'low-fat' meant 'healthy',
the health of those who adopted 'healthy' guidelines,
has worsened dramatically.
This always seems to
happen when we think we know better than
Nature.
Last updated 12 April 2009
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