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Table 1 Definitions of probiotics

From: The role of probiotics, prebiotics and synbiotics in animal nutrition

Year

Definitions

1965

A substance secreted by one microorganism which stimulates the growth of another [5]

1971

Tissue extracts which stimulate microbial growth [6]

1974

Organisms and substances that contribute to intestinal microbial balance [7]

1989

Live microbial feed supplement which beneficially affects the host animal by improving microbial balance [8]

1992

Viable mono- or mixed culture of live microorganisms which, applied to animals or man, have a beneficial effect on the host by improving the properties of the indigenous microflora [9]

1996

A live microbial culture or cultured dairy product that beneficially influences the health and nutrition of the host [10]

1996

Living microorganisms which, upon ingestion in certain numbers, exert health benefits beyond inherent basic nutrition [11]

1998

Living microorganisms that on ingestion in certain numbers exert health benefits beyond inherent basic nutrition [12]

1999

A microbial dietary adjuvant that beneficially affects the host physiology by modulating mucosal and systemic immunity, as well as improving nutritional and microbial balance in the intestinal tract [13]

2001

A preparation of or a product containing viable, defined microorganisms in sufficient numbers, which alter the microflora (by implantation or colonization) in a compartment of the host and by that exert beneficial health effect in this host [14]

2002

Live strains of strictly selected microorganisms which, when administered in adequate amounts, confer a health benefit on the host [15]

2004

Preparation of viable microorganisms that is consumed by humans or other animals with the aim of inducing beneficial effects by qualitatively or quantitatively influencing their gut microflora and/or modifying their immune status [16, 17]

2009

Live microorganisms, which when administered in adequate amounts, confer a health benefit on the host [18]

2013

Live strains of strictly selected microorganisms which, when administered in adequate amounts, confer a health benefit on the host [19]