Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

Vegetable Oils and Emulsifiers
Vegetable Oils
A vegetable oil is a triglyceride (an ester composed of a glycerol bound to three
fatty acids) extracted from a plant
...
Vegetable oils that are solid at room
temperature are sometimes called vegetable fats because the term ‘vegetable
oil’ is normally defined as a substance that is liquid at room temperature
...

Extracting Vegetable Oils
The plant materials are crushed and pressed to squeeze the oil out
...
Sometimes the oil is more difficult to extract and has to be
dissolved in a solvent
...
This is how sunflower oil is obtained
...
They can also be
used as fuels like biodiesel
...
Replacing saturated animal fats with polyunsaturated vegetable
oils has become common because they can reduce serum cholesterol levels
and help prevent heart disease
...

Polyunsaturated fats are highly unstable
...
That oxidation is linked to all
sorts of issues from cancer, endrometriosis, PCOS, etc
...
These normally don’t mix and
will separate if left without an emulsifier
...
The emulsifier keeps these mixed and without it the oil and water
separate
...

Some emulsifiers can help with dispersion, foaming, anti-foaming, wetting,
solubilisation, anti-staling and more which makes them useful ingredients in
processed foods
...

Researchers also recently discovered that the emulsifier methyl cellulose used
in snacks and cakes may encourage weight loss, so they’re investigating what
they can use the cake powder in things like soups and smoothies aimed at
people wanting to lose weight
...
Mono-diglycerides (hydrogenated oils) are a synthetic emulsifier also
used in food
...




---