Food Science CDE test bank-Iowa 2019

When a company replaces atmospheric air in a bag of potato chips with a pre-defined mixture of oxygen, carbon dioxide, and/or nitrogen to preserve product appearance and extend shelf life, they are using _______________ technology.

• electron beam packaging

• aerobic packaging

• retort packaging

• modified-atmosphere packaging

The largest shell egg recall in U.S. history occurred this year due to ______ contamination, a pathogen that may be found in eggs.

• Listeria monocytogenes

• Escherichia coli O157:H7

• Salmonella enteritidis

• Staphylococcus aureus

The flavor enhancer ________________ has no flavor of its own but is used in food products to help bring out the flavors already present in food.

• calcium alginate

• monosodium glutamate

• acetic acid

• sodium propionate

When rice grains are stored for long periods of time, they are less sticky after cooking than fresher grains of rice because ___________ acts on amylose, breaking down the amylose chains.

• heat

• proteolysis

• lactase

• amylase

When glucose reacts chemically with oxygen, water and __________ are formed.

• carbon dioxide

• sucrose

• fructose

• ethyl alcohol

The protein molecules of collagen and elastin form rope-like fibers so they are considered to be _______ proteins.

• globular

• fibrous

• denatured

• coagulated

To make vinegar from apples takes several steps. In the first step, sugar from the fruit is converted to ______________ in the presence of yeast.

• acetic acid

• methyl alcohol

• citric acid

• ethyl alcohol

The pH of a food ingredient, measured on a scale from __________, influences the functionality of the ingredient in a food product.

• 0-1

• 0-7

• 0-14

• 0-20

Food companies sometimes use potassium chloride instead of sodium chloride to lower the sodium content of a food product; however, potassium chloride can have a ________ aftertaste.

• bitter

• sweet

• sour

• hot

Food ingredients that are GRAS, also known as __________, are considered safe for human consumption.

• generally realized as secure

• generally recognized as safe

• government recognized as safe

• generally recognized as secure