What This Document Is
These are lecture notes prepared to assist students reviewing for the third exam in Johns Hopkins University’s “The Environment and Your Health” (AS280 335) course. The notes cover a range of topics related to food safety, fungal contaminants, microbial contamination, and food regulation. It’s a consolidated resource for key concepts discussed in lectures.
Why This Document Matters
This study guide is essential for students enrolled in AS280 335 preparing for their third exam. It serves as a focused review of complex topics, helping to identify areas needing further study. It’s most valuable when used *in conjunction with* course lectures and assigned readings, not as a replacement for them.
Common Limitations or Challenges
This document is a condensed summary of lecture material. It does not provide in-depth explanations of the scientific processes involved, nor does it offer practice problems or solutions. It’s a review tool, not a comprehensive textbook or a substitute for active learning.
What This Document Provides
The full notes include information on:
* The impact of increased food consumption since 1990.
* The role of water activity in microorganism growth.
* Details on fungal contaminants (mycotoxins) like fumonisins and ochratoxins, including their sources and health effects.
* Information on “St. Anthony’s Fire” (ergotism).
* An overview of foodborne pathogens like Norovirus, Salmonella, and Staphylococcus.
* A summary of food safety regulations, including the Federal Food, Drug, and Cosmetic Act of 1938 and the Dietary Supplement Health and Education Act of 1994.
* Discussion of metabolic toxins like acrylamide and heterocyclic amines.
This preview does *not* include detailed explanations of the chemical structures of mycotoxins, specific outbreak data beyond the 1998-2008 timeframe, or a complete analysis of the DSHEA.