1. Introduction
Probiotics are defined as live microorganisms when administered
in adequate amounts confer a health benefit on the host
(FAO/WHO, 2001). Elie Metchnikoff hypothesized the concept
of probiotics around the year 1900, when he noticed that the
long, healthy lives of Bulgarian peasants were the result of their
consumption of fermented milk products. Later on it was found
that yogurt contained the organisms necessary to protect the
intestine from the damaging effects of other harmful bacteria.
Different microorganisms have been used thereafter as
probiotics in the last century for their ability to prevent and
cure diseases (Lee, Nomoto, Salminen, & Gorbach, 1999).
Probiotic microorganisms are usually available as culture concentrates
in dried or deep-freeze form to be added to a food
for industrial or home uses. These may be consumed either
1. Introduction
Probiotics are defined as live microorganisms when administered
in adequate amounts confer a health benefit on the host
(FAO/WHO, 2001). Elie Metchnikoff hypothesized the concept
of probiotics around the year 1900, when he noticed that the
long, healthy lives of Bulgarian peasants were the result of their
consumption of fermented milk products. Later on it was found
that yogurt contained the organisms necessary to protect the
intestine from the damaging effects of other harmful bacteria.
Different microorganisms have been used thereafter as
probiotics in the last century for their ability to prevent and
cure diseases (Lee, Nomoto, Salminen, & Gorbach, 1999).
Probiotic microorganisms are usually available as culture concentrates
in dried or deep-freeze form to be added to a food
for industrial or home uses. These may be consumed either
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