3.4.1.2 Signs of Food Spoilage

• Food spoilage is the deterioration of food quality due to the growth of microorganisms, such as bacteria and molds.
• What is a visual sign of food spoilage?

  Change in color
• A slimy or soft texture in food indicates a change in texture due to spoilage.
• How does food spoilage affect taste?

  Taste alterations occur
• Food spoilage and food contamination are the same thing.

  False
• Applying food safety practices helps prevent food spoilage.
• Match the sign of food spoilage with its description:

  Unpleasant Odor ↔️ Foul or rancid smell

  Change in Color ↔️ Unusual or darkened shades

  Slimey Texture ↔️ Slimy, mushy, or soft

  Mold Growth ↔️ Visible mold on surface

  Bloating or Bubbling ↔️ Packages inflate
• Order the common signs of food spoilage from olfactory to visual:

  1️⃣ Unpleasant Odor

  2️⃣ Change in Color

  3️⃣ Slimey or Soft Texture

  4️⃣ Mold Growth

  5️⃣ Bloating or Bubbling
• What are the primary causes of food spoilage?

  Bacteria and molds
• Bacteria and molds can change the taste, smell, texture, and appearance of food.
• Bacteria can cause unpleasant odor, slimy texture, bloating, or bubbling
• Match the cause of spoilage with its effect on food:

  Bacteria ↔️ Unpleasant odor, bloating

  Molds ↔️ Mold growth, color change
• Understanding the role of microorganisms is crucial for food safety.
• What are common visual signs of food spoilage?

  Color change, mold, slime
• Visible mold colonies on food are a sign of spoilage
• Match the olfactory sign of spoilage with its description:

  Unpleasant Odor ↔️ Foul or rancid smell

  Sour Smell ↔️ Acidic or vinegar-like odor
• Olfactory signs of food spoilage refer to unpleasant smells emitted by spoiled food.
• What is the definition of food spoilage?

  Deterioration of food quality
• An unpleasant odor in food is often caused by bacteria or molds
• Molds can cause mold growth and changes in food color.
• What does a slimey or soft texture indicate in food?

  Food spoilage
• Bloating in food packaging is caused by gas production from bacteria
• Common olfactory signs of food spoilage include foul, sour, and fishy
• Match the texture of spoiled food with its description and cause:

  Slimy ↔️ Slippery film, bacteria, molds

  Soft ↔️ Mushy or overly soft, bacteria, molds

  Hard ↔️ Dry and hardened, moisture loss

  Gaseous ↔️ Bubbles or bloating, bacteria
• Textural changes in food often accompany unpleasant odors.
• Common taste changes in spoiled food include sour, rancid, metallic, and yeasty
• Match the altered taste with its description, cause, and food example:

  Sour ↔️ Sharp, acidic, bacteria, spoiled milk

  Rancid ↔️ Bitter, unpleasant, oxidation of fats, old cooking oil

  Metallic ↔️ Metallic taste, bacterial reactions, contaminated canned food

  Yeasty ↔️ Slight alcohol flavor, fermentation by yeast, spoiled bread dough
• Food spoilage is the deterioration of food quality due to the growth of bacteria, molds, and other microorganisms
• An unpleasant odor is a common sign of food spoilage caused by bacteria and molds.
• Order the steps to prevent food spoilage:

  1️⃣ Understand common causes like bacteria and molds

  2️⃣ Store food properly to inhibit microbial growth

  3️⃣ Use visual, olfactory, and textural signs to detect spoilage
• Match the visual sign of food spoilage with its description:

  Change in Color ↔️ Food turns a different shade

  Slimey or Soft Texture ↔️ Food becomes excessively slimy

  Mold Growth ↔️ Visible mold colonies appear

  Bloating ↔️ Packages inflate due to gas
• Olfactory signs of food spoilage include a foul or rancid smell, often caused by the growth of bacteria and molds
• Spoiled fish often has a strong, unpleasant odor due to bacterial growth.
• A sour taste in milk is often caused by bacteria producing lactic acid
• Rancid cooking oil has a bitter, unpleasant taste due to the oxidation of fats.
• Contamination in food refers to the presence of harmful substances or microorganisms
• Match the term with its definition:

  Food Spoilage ↔️ Deterioration of food quality due to microorganisms

  Contamination ↔️ Presence of harmful substances in food
• What is food spoilage caused by?

  Microorganism growth
• Contamination refers to the presence of harmful substances or microorganisms
• Food spoilage leads to changes in taste, smell, texture, and appearance.