Mixed Deck — All CRC Topics Flashcards

Why is it important to verify nutritional information on product labels?

Answer: To ensure regulatory compliance and consumer safety

Verifying nutritional information on product labels is crucial to ensure regulatory compliance and consumer safety. It confirms that the product adheres to strict government regulations, such as those set by the FDA, regarding accurate labeling. This compliance protects consumers by providing reliable information about ingredients, allergens, and nutritional content, enabling them to make informed and safe dietary choices.

Which method is commonly used for sensory testing of food products?

Answer: Consumer preference testing

Consumer preference testing involves gathering feedback from a group of typical consumers to determine their liking, disliking, or preference for a food product. This method is crucial for understanding market appeal and making decisions about product formulation. It ensures the product meets consumer expectations and has commercial viability.

What is the most common test used to measure product acceptance by consumers?

Answer: Acceptance testing

Acceptance testing directly assesses how much consumers like or dislike a product, or their willingness to purchase it. This type of sensory test typically involves a larger group of untrained consumers who evaluate the product based on overall liking or specific attributes. It provides crucial data for market viability and product success.

Which procurement strategy involves locking in ingredient prices for a set period to protect against market volatility?

Answer: Forward contracting

Forward contracting allows manufacturers to agree on a price in advance, reducing exposure to commodity price fluctuations.

A product development team wants to create a detailed sensory 'fingerprint' of their new artisanal ketchup to understand the intensity of specific attributes like 'smoky aroma,' 'vinegar tang,' and 'cooked tomato flavor.' Which sensory evaluation method is most suitable for this objective?

Answer: Quantitative Descriptive Analysis (QDA)

Quantitative Descriptive Analysis (QDA) is the correct method because it uses a trained panel to identify, define, and quantify the intensity of specific sensory attributes of a product. This process generates a detailed sensory profile, or 'fingerprint.' Affective tests measure liking, while Triangle and Duo-Trio tests are discrimination tests used only to determine if a perceptible difference exists between samples.

A culinary R&D team is creating a hollandaise sauce concentrate. To ensure a stable product, they must incorporate an effective emulsifier. Which naturally occurring component in egg yolks serves this function?

Answer: Lecithin

Lecithin, a phospholipid found in high concentrations in egg yolks, is a powerful natural emulsifier. Its molecules have both a hydrophilic (water-attracting) end and a lipophilic (oil-attracting) end. This structure allows lecithin to surround microscopic oil droplets, preventing them from coalescing and separating from the water-based components (like vinegar or lemon juice), thus creating a stable emulsion like hollandaise or mayonnaise.

A research chef is developing a canned tomato sauce and must adjust the pH to below 4.6 for food safety, primarily to inhibit the growth of Clostridium botulinum. Which of the following ingredients is most appropriate for this purpose?

Answer: Citric acid

To ensure the safety of canned tomatoes and prevent the germination of Clostridium botulinum spores, the pH must be reliably lowered to 4.6 or below. Citric acid is the industry standard for this process, as it is effective, economical, and contributes a bright, tart flavor that is complementary to tomatoes. Sodium bicarbonate is a base and would raise the pH. Calcium chloride is a firming agent, and sodium erythorbate is an antioxidant.

During a quality control check of a new batch of ready-to-eat chicken salad, the presence of Listeria monocytogenes is detected. Why is this particular pathogen a significant concern for this type of product?

Answer: It is capable of growing at refrigeration temperatures.

Listeria monocytogenes is a major concern in ready-to-eat foods like deli meats and salads because it is a psychrotroph, meaning it can survive and multiply at cold temperatures, including standard refrigeration (around 40°F/4°C). This allows it to proliferate during storage, increasing the risk of listeriosis, a serious infection, especially for vulnerable populations.

During the shelf-life testing of a new salad dressing, sensory evaluation panelists begin to consistently detect rancid notes. This sensory defect is most likely due to the degradation of which component?

Answer: Lipids

Rancidity is the process of oxidation or hydrolysis of fats and oils (lipids) when exposed to air, light, or moisture, resulting in undesirable off-flavors and odors. Salad dressings typically contain a significant amount of oil, making lipid degradation a primary concern for quality and shelf life.

What is an example of a functional food?

Answer: A fortified yogurt with probiotics.

Functional foods are those that provide health benefits beyond basic nutrition, often by containing added ingredients like vitamins, minerals, or probiotics. A fortified yogurt with probiotics fits this description because it not only offers basic nutrients but also live beneficial bacteria that support gut health, providing an additional health advantage.

A research chef uses a 9-point hedonic scale to collect consumer preference data for a new sauce. What level of measurement does this scale represent?

Answer: Interval

A 9-point hedonic scale is an interval scale because the distances between scale points are assumed equal, but it lacks a true zero point representing the complete absence of the attribute.

Which is a primary function of food preservation?

Answer: To prevent spoilage and extend shelf life.

Food preservation refers to various techniques used to inhibit or slow down the spoilage of food caused by microbial growth, undesirable chemical changes, or enzymatic reactions. The primary goal is to extend the shelf life of food products, making them safe and available for consumption over longer periods, and reducing waste.

What does a p-value of 0.03 indicate in a food science experiment using a significance level of α = 0.05?

Answer: The result is statistically significant and the null hypothesis is rejected

Because p = 0.03 is less than α = 0.05, the result is statistically significant, meaning you reject the null hypothesis and conclude the tested variable had a real effect.

Which of the following correctly identifies the five mother sauces of classical French cuisine as codified by Auguste Escoffier?

Answer: Béchamel, Velouté, Espagnole, Tomato, and Hollandaise

The five foundational mother sauces in French cuisine are Béchamel (milk-based, thickened with roux), Velouté (white stock-based, thickened with roux), Espagnole (brown stock-based, thickened with roux), Tomato (traditionally tomato-based), and Hollandaise (an emulsion of egg yolk and liquid butter). These five form the basis from which hundreds of other 'small sauces' are derived.

A quality assurance team needs to determine the lowest concentration of a specific off-flavor (e.g., geosmin in water) that can be reliably detected by their expert panelists. What is this minimum detectable level called?

Answer: Absolute Threshold

The Absolute Threshold is defined as the lowest level or minimum intensity of a stimulus (like an aroma or taste) that an organism can detect. The Just Noticeable Difference (JND) is the smallest change in intensity that can be perceived. The Terminal Threshold is the point at which an increase in stimulus intensity is no longer perceived. 'Hedonic Limit' is not a standard sensory term.

What is the recommended method for conducting nutritional analysis of a new food product?

Answer: Sending the product to a certified laboratory for testing

For accurate and legally compliant nutritional labeling, it is essential to have a new food product analyzed by a certified laboratory. These laboratories use standardized analytical methods to precisely determine the nutrient content. This ensures the data is reliable, defensible, and meets all regulatory requirements, unlike estimations or visual inspections.

To minimize psychological bias and ensure the validity of sensory panel results, which of the following practices is most critical?

Answer: Randomizing the presentation order of samples and using three-digit codes

Randomizing the sample order prevents first-sample bias, while using non-descriptive three-digit codes (e.g., 417, 832) prevents panelists from being influenced by any perceived order or identity of the samples. Providing detailed product information or encouraging group discussion would introduce significant bias. While using category users can be important for some tests, it doesn't inherently minimize psychological bias during the test itself.

Which concept describes the minimum number of covers or units a menu item must sell to recover its fixed and variable costs?

Answer: Break-even point

The break-even point is where total revenue from a product equals total costs, meaning no profit or loss is generated at that volume.

A chef is creating a Mornay sauce for a classic croque monsieur. This sauce is considered a 'daughter sauce.' Which of the five mother sauces is its direct foundation?

Answer: Béchamel

A Mornay sauce is a derivative, or 'daughter sauce,' of Béchamel. It is created by enriching a basic Béchamel sauce (milk thickened with a white roux) with grated cheese, typically Gruyère, Parmesan, or a combination.

Which of the following is the primary principle behind dehydration as a food preservation method?

Answer: Reducing water activity to inhibit microbial growth

Dehydration preserves food by removing moisture, which directly lowers the water activity (aw). Water activity is a measure of the unbound, available water that microorganisms need to grow. By reducing the water activity to a level below which most bacteria, yeasts, and molds cannot reproduce (generally below 0.85), their growth is inhibited, thus preserving the food.