Meat Animals and Quality Overview

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Questions and Answers

Match the following attributes of meat quality with their descriptions:

Appearance = Perceived through sense of sight Odour = Evaluated using the sense of smell Flavour = Includes sour, sweet, bitter, and salty Texture = Assessed through mouth feel or finger feel

Match the sensory evaluation methods with their purposes:

Paired comparison test = Identifies simple differences between two samples Triangle test = Detects the odd sample among three Descriptive analysis = In-depth profiling of sensory attributes Hedonic rating = Measures consumer preferences and acceptance

Match the meat inspection techniques with their definitions:

Visual inspection = Evaluates the general appearance of meat Sensory evaluation = Describes meat quality attributes perceived by senses Chemical analysis = Assesses composition and contaminants in meat Microbiological testing = Checks for harmful microorganisms in meat

Match the components of meat quality control methods with their characteristics:

<p>Trained panelists = Individuals knowledgeable in sensory evaluation Score-sheets = Tools used by panelists to record findings Standard test methods = Ensure comparability of results among evaluations Chilling treatment = Process recognized through sensory evaluation</p> Signup and view all the answers

Match the eating quality aspects of meat with their sensory characteristics:

<p>Juiciness = Perceived through texture and moisture assessment Tenderness = Evaluated by texture during chewing Flavour = Influenced by odour and taste sensations Savory = Associated with specific taste profiles</p> Signup and view all the answers

Match the sensory evaluation methods with their typical application:

<p>Discrimination tests = Determine if differences exist between samples Preference tests = Identify consumer liking for specific products Descriptive tests = Provide detailed sensory profiles of meat Overall acceptability tests = Assess general consumer preference</p> Signup and view all the answers

Match the aspects that influence sensory evaluation with their roles:

<p>Environmental factors = Light and noise levels can affect sensory perceptions Palate cleansing = Enhances the clarity of taste evaluations Sampling techniques = Ensure representative portions of meat are tested Training = Improves the ability to detect subtle differences in quality</p> Signup and view all the answers

Match the roles of a sensory evaluation panel with their functions:

<p>Evaluation consistency = Ensures reliable and comparable results Diverse palate = Aids in detecting a variety of flavour profiles Expertise in methods = Knowledge of standardized testing procedures Recording observations = Systematically documents findings for analysis</p> Signup and view all the answers

Match the following meat quality attributes with their descriptions:

<p>Tenderness = Preferred by consumers for ease of chewing Freshness = Indicated by smell and bright red color Juiciness = Related to the moisture content in meat Flavour = Affected by spices and cooking methods</p> Signup and view all the answers

Match the meat inspection techniques with their primary focus:

<p>Sensory evaluation = Assessing appearance, odor, and taste Visual inspection = Checking for color and surface characteristics Touch testing = Evaluating the texture and tenderness by hand Smell analysis = Determining freshness through odor</p> Signup and view all the answers

Match the quality control methods with their specific functionalities:

<p>Organoleptic evaluation = Measuring sensory perceptions of meat Chemical analysis = Determining meat composition and spoilage Physical assessment = Evaluating meat size and fat layers Microbial testing = Identifying spoilage organisms in meat</p> Signup and view all the answers

Match the eating quality aspects of meat with their implications:

<p>Tenderness = Influences consumer satisfaction during chewing Aroma = Enhances the overall flavor perception Color = Indicates freshness and quality Fat content = Affects juiciness and flavor richness</p> Signup and view all the answers

Match the sensory evaluation methods with their intended outcomes:

<p>Taste test = Determining overall flavor quality Texture assessment = Evaluating chewing experience Color inspection = Assessing visual appeal and freshness Odor evaluation = Identifying freshness and spoilage</p> Signup and view all the answers

Match the sensory attributes with their relevance to meat quality evaluation:

<p>Smell = Indicates freshness and spoilage Taste = Determines palatability of the meat Visual appeal = First impression of quality based on sight Texture = Influences consumer expectations during eating</p> Signup and view all the answers

Match the consumer preferences with the quality aspects they relate to:

<p>Tender meat = Correlates with consumer enjoyment Bright red color = Signifies freshness in meat Juicy meat = Enhances overall eating experience Pleasant aroma = Boosts flavor perception and acceptance</p> Signup and view all the answers

Match the following terms to their correct descriptions:

<p>Hedonic scale = Used to measure acceptability of meat Acceptability test = Determines consumer preference Organoleptic test = Focuses on sensory attributes of food Freshness indicator = Signaled by bright color and pleasant smell</p> Signup and view all the answers

Match the following meat inspection techniques with their purposes:

<p>Weight difference = Measures loss of water in meat Brine testing = Determines salt levels in processed meat Air inflation = Checks for leaks in packaging pH measurement = Assesses acidity for quality control</p> Signup and view all the answers

Match the following quality control methods with their descriptions:

<p>Physical tests = Involves measurements like weight or pH Chemical methods = Require sophisticated equipment Sensory evaluation = Assess subjective qualities of meat Weight assessment = Provides information about economic losses</p> Signup and view all the answers

Match the following aspects of meat quality with their relevance:

<p>Eating quality = Related to consumer perception of taste Weight difference = Significant for economic implications Salt concentration = Critical for preserving meat integrity pH levels = Influences meat's shelf life and safety</p> Signup and view all the answers

Match the following sensory evaluation aspects with their categories:

<p>Flavor = Taste and aroma characteristics Texture = Mouthfeel and chewiness of meat Appearance = Visual quality and color of meat Juiciness = Moisture release during consumption</p> Signup and view all the answers

Match the following pH values with their significance in meat quality:

<p>7.0 – 7.1 = pH of live animal muscle tissue 5.6 – 5.8 = Lowest pH value 24 hours post-slaughter 6.0 = Normal range for quality meat 4.5 = Salt concentration threshold for cured products</p> Signup and view all the answers

Match the following meat processing methods with their attributes:

<p>Cured products = Contain up to 5% salt Cooked products = Salt should not exceed 3% Fresh meat = Subject to higher evaporation losses Brined products = Utilize sugar and nitrite alongside salt</p> Signup and view all the answers

Match the following techniques with their methods of measurement:

<p>Salimeter = Used to measure brine salt concentration Scales = Applied for assessing weight loss Graphic analysis = Not applicable for pH values Air pumping = Checks for leaks in the packaging process</p> Signup and view all the answers

Flashcards

Sensory Evaluation of Meat

Describing meat's perceptible properties through senses (sight, smell, taste, touch).

Sensory Evaluation Panel

A group of trained individuals who objectively evaluate meat samples.

Paired Comparison Test

A sensory test where panelists compare two coded samples to find differences.

Triangle Test

A test where panelists identify the odd sample from three coded samples, two identical.

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Meat Appearance

Visual characteristics of meat (e.g., color, size, shape, cleanliness).

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Meat Odor

The smell of meat, a critical sensory aspect.

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Meat Texture

The feel of meat, determined by mouth feel or touch.

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Meat Flavor

The taste of meat, including basic tastes like sour, sweet, bitter, and salty.

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Hedonic Scale

A tool used to measure how much people like or dislike a product, often using numbers or words to rate liking.

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Acceptability Test

A test to determine if a product is suitable for consumption based on its sensory qualities.

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Meat Color: Fresh

Fresh meat typically displays a bright red color due to oxygen reacting with myoglobin.

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Meat Color: No Oxygen

In the absence of oxygen, meat takes on a dark red hue.

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Meat Color: Spoiling

When meat starts to spoil, it loses its bright red color even when exposed to oxygen.

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Meat Consistency

The texture of meat, how it feels in your mouth or when touched.

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Meat Smell & Taste

Closely linked, these factors help determine the overall flavor of meat.

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Meat Flavor: Influences

Spices and compounds produced during ripening or cooking all contribute to the final flavor of meat.

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Can Leak Test

A method to check for holes or leaks in a can by inflating the can with air and immersing it in water. Air bubbles indicate a leak.

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Meat Weight Loss

The decrease in weight of meat due to evaporation or dripping during handling, processing, or storage.

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Meat Weight Loss Measurement

Measuring the difference in weight before and after handling, processing, or storage to quantify weight loss.

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Brine Salt Concentration

The amount of salt dissolved in brine used for meat processing, typically between 2.5-3% for cooked cured products and 4.5-5% for raw cured and dried products.

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Salimeter

An instrument used to measure the salt concentration in brine by dipping it into the brine and observing the level of sinking.

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Meat pH

The acidity level of meat, which is important for its microbiological and keeping quality.

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Meat pH After Slaughter

The pH of meat decreases after slaughter, reaching its lowest level of around 5.6-5.8 within 24 hours.

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Non-Uniform Meat pH

The pH of meat can vary in different carcasses or parts of a carcass.

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Study Notes

Meat Animals and Meat Quality

  • Meat is any part of an animal intended or judged safe for human consumption (CAC/RCP 58-2005)

Common Meat Animals

  • Domestic ungulates (cattle, pigs, sheep, goats, horses)
  • Domestic birds (poultry)
  • Lagomorphs (rabbits, hares, pikas)
  • Farmed game
  • Farmed game birds
  • Wild games (mammals and birds)
  • Other animals, as specified

Meat Types

  • Red meat (sometimes called dark meat)
  • White meat

Colour Differences

  • Colour differences are due to variations in muscle activity, influencing muscle pigment (myoglobin)

Meat Quality Attributes

  • Quality is defined by two aspects:
    • Safety
    • Eating quality

Safety

  • Meat should be free of harmful microorganisms or unfavorable substances
  • Signs of a healthy animal include quick appearance, good reflexes, movement, and normal health parameters
  • Pregnant animals' blood may be contaminated with fetal waste materials

Eating Quality

  • Defined by the consumer, considers
    • Freshness
    • Proportion of lean to fat
    • Palatability (texture & consistency, juiciness, flavor)
    • Appropriate use of additives/extenders

Meat Quality Preferences

  • Tropical countries often prefer mature animals, while temperate countries often prefer young animals
  • Preferences differ due to cultural practices and food preparation tastes

Meat Inspection and Quality Control

  • General meat inspection is an initial step to screen unacceptable meat through visual and physical examination
  • Meat quality control uses approved techniques to determine quality
  • Quality control is essential for all meat processing plants

Meat Quality Control Methods

  • There are different methods, from simple to sophisticated, depending on the needed accuracy
  • The methods are used to inform consumers and processors about meat quality.

Sensory (Organoleptic) Evaluation

  • Involves describing meat and meat product attributes through the senses.
  • Senses of sight, smell, taste, and touch are used to evaluate color, size, shape, cleanliness, odor, flavor, and texture.
  • Can be done by one person, or a more objective group of panelists

Sensory Evaluation methods

  • Paired Comparison Test
  • Triangle Test
  • Hedonic/Acceptability Test

Color

  • Fresh meat turns bright red when exposed to air (oxygen+myoglobin)
  • Meat loses freshness and its bright color when without exposure to air.
  • Consumers prefer tender and juicy meat.
  • The best way to examine consistency is by chewing

Smell and Taste

  • Smell and taste are related, and evaluated simultaneously
  • Fresh meat has a slightly acidic smell that intensifies with time (lactic acid formation)
  • Spoiled meat has an unpleasant odor
  • Freshness is marked by smell and appearance

Physical Tests

  • Physical methods focus on meat condition or surrounding conditions (storage rooms, etc.
  • Includes temperature, humidity and water activity.
  • Temperature: Low temperatures are essential for preventing microbial growth, during chilling, and freezing
  • Humidity: High humidity can cause evaporation and wetting
  • Water activity (aw) measures the available water in meat; microbial growth is affected by water activity.
  • Airtight Closure: Important fro shelf stable meat products. Techniques to check for leaks.

Chemical Tests

  • Chemical tests determine specific substances within meat and meat products.
  • Includes pH measurement—important for microbiological aspects.
  • pH: Ranges in live animals and carcasses. Different meats have different pH values
  • Moisture/fat/protein determination: Methods to determine these components in meat

Microbiological Examination

  • Aims to determine bacterial contamination in meat and meat products
  • It needs laboratory facilities
  • Includes contact (trigger) methods and quantitative methods, such as total plate count and selective plate count
  • Sampling methods (contact & destructive) are needed

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