A Pre-Treatment Model for Ethanol Production Using a Colorimetric Analysis of Starch Solutions (1 Activity)

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Grades

9-12

Subject

Bioenergy

Summary

This module focuses on the production of sugar (glucose and maltose) from cornstarch. There are three activities:

  • The first lesson from this module compares glucose production from cornstarch to ethanol fuel production from corn stover.
  • The second lesson uses a calculator-based colorimeter interface from the Vernierâ„¢ Company to quantify the hydrolysis of starch to sugar by salivary amylase.
  • The third lesson also uses colorimetry, this time to measure starch hydrolysis with dilute (1% volume to volume) sulfuric acid. It also includes suggestions for using starch hydrolysis and colorimetry as a basis for student designed experiments.
Curriculum

Environmental Science, Chemistry

Plan Time

5 class periods

Materials

Various chemistry lab supplies

Standards

Science Content Standards: 9-12
CONTENT STANDARD A: Science as Inquiry

  • Abilities necessary to do scientific inquiry
  • Understandings about scientific inquiry

CONTENT STANDARD B: Physical Science

  • Structure of atoms
  • Structures and of properties in matter
  • Chemical reactions

CONTENT STANDARD C: Life Science

  • Understanding of the cell

CONTENT STANDARD E: Science and Technology

  • Abilities of technological design
  • Understandings about science and technology

CONTENT STANDARD F: Science in Personal and Social Perspectives

  • Natural resources
  • Environmental quality
  • Science and technology in local, national, and global challenges

CONTENT STANDARD G: History and Nature of Science

  • Science as a human endeavor
  • Nature of scientific knowledge
Owner

National Renewable Energy Laboratory

Lesson Plans/Activity