1800s federal controls over the us drug supply began in 1848 with the drug importation act, whichrequired us customs to stop the importation of adulterated drugs. due to the growing necessity for safefood and drug products, in 1862 president abraham lincoln appointed chemist charles m. wetberill tohead the chemical division in the newly created department of agriculture. this division conductednumerous food adulteration studies. late in the 1800s, more than 100 food and drug billst~l wereintroduced in congress. early 1900s in 1902, the biologics control act was passed to ensure purity and safety of serums, vaccines, andsimilar products used to prevent or treat diseases in humans. shocking disclosures of insanitaryconditions in meatpacking plants, the use of poisonous preservatives and dyes in foods, and core-allclaims for worthless and dangerous patent medicines prompted congress to pass the food and drugsact in 1906. this federal law prohibited intersta
目录
unit 1 preface chapter 1 translation skills chapter 2 special english word-formation reading material unit 2 fundamental chemistry chapter 3 elements and compounds chapter 4 organic solvent chapter 5 biochemical reaction reading material unit 3 biochemical engineering chapter 6 introduction 6.1 the nature of biotechnology 6.2 historical evolution of biotechnology reading material chapter 7 amino acids, peptides, and proteins reading material chapter 8 enzymes reading material chapter 9 nucleotides and nucleic acids reading material chapter 10