FTECH 103 Module 3- High Sugar Preservation

Osmosis is the movement of water from a high concentration of solute to a low concentration of solute through a semipermeable membrane.

• True

• False

Answer explanation

Osmosis the movement of solvent (water) from low to high concentration of solute through a semipermeable membrane.

High concentration of sugar attracts water, thereby reducing available water for microbes to use.

• True

• False

If mango slices are added with sugar twice its weight and left for 3 hours, water will be expelled from the mangoes.

• True

• False

Jam requires 60 g of sucrose/100 g of solution.

• True

• False

Answer explanation

65-65% or 65-68 degrees Brix= 65 g sucrose/100 g sol'n

Boiling can be considered as a physico-chemical hurdle.

• True

• False

Answer explanation

Physical hurdle

 Intermediate-moisture foods contain sufficient dissolved solutes to decrease water activity below that required to support microbial growth.

• True

• False

Jams are intermediate moisture foods.

• True

• False

Intermediate moisture foods definitely require refrigeration even without opening.

• True

• False

Jams are contaminated mostly by_______________.

• Bacteria

• Protozoa

• Yeasts and Molds

• Algae

___________ are made from whole fruit, halves, or chunks.

• Spreads

• Jams

• Preserves

• Jellies