Plant Biochemistry – Applied Case Studies

Purpose of Case Studies

These case studies connect plant biochemistry concepts with real-world horticultural systems in Ethiopia and beyond. Students analyze biochemical mechanisms underlying crop productivity, quality, stress tolerance, and value addition.

Learning Outcomes:

Core Applied Case Studies

1. Coffee Quality and Biochemical Composition

Sector: Beverage crops (Coffee)

Focus: Relationship between biochemical compounds and coffee quality.

  • Caffeine, chlorogenic acids, sugars, lipids
  • Impact of altitude and processing methods
  • Quality traits: aroma, flavor, acidity
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2. Enset Productivity and Carbohydrate Metabolism

Sector: Root and tuber crops

Focus: Biochemical basis of starch accumulation and food security.

  • Carbohydrate synthesis and storage
  • Variation among landraces
  • Implications for yield and resilience
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3. Fruit Color and Secondary Metabolites

Sector: Fruits (mango, banana, avocado)

Focus: Role of pigments in fruit quality.

  • Anthocyanins, carotenoids, flavonoids
  • Consumer preference and nutrition
  • Postharvest biochemical changes
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4. Stress Tolerance in Vegetables

Sector: Vegetables

Focus: Biochemical mechanisms of stress resistance.

  • Antioxidant enzymes (SOD, CAT, POD)
  • Osmoprotectants (proline, sugars)
  • Implications for climate adaptation
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5. Essential Oils in Spices

Sector: Spices (ginger, turmeric, coriander)

Focus: Secondary metabolites and economic value.

  • Terpenoids and phenolic compounds
  • Extraction and quality assessment
  • Applications in food and medicine
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6. Floriculture and Pigment Biochemistry

Sector: Floriculture

Focus: Biochemical control of flower color and longevity.

  • Pigments: anthocyanins and carotenoids
  • Ethylene and senescence
  • Commercial implications
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Student Tasks