“…Actually, intervention studies are usually based on a daily supplementation of 4 weeks even though there are some indication that faecal bifidobacteria and lactobacilli can be modulated after 7 or 10-days of probiotic intake (Chen, Wu, Lee, Huang, & Wu, 1999;Tuohy et al, 2007). Probiotic artichoke and olive product intake at daily basis lasting 15 days has allowed the colonization of human gut by L. paracasei IMPC 2.1 (Lavermicocca et al, 2005;Riezzo et al, 2012;Valerio et al, 2010Valerio et al, , 2011. In particular, an in vivo trial on eight human subjects suffering from constipation and a placebo-controlled human trial with 20 healthy subjects demonstrated the efficacy of L. paracasei IMPC 2.1 carried by ready-to-eat artichokes in transiently colonizing the human gut thus modulating potentially harmful bacteria, faecal enzyme activity and short chain fatty acid (SCFA) production as well as symptom profile (Riezzo et al, 2012;Valerio et al, 2010Valerio et al, , 2011.…”