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On the Method of Extracting Natural Preservative in Houttuynia Cordata Thunb.and its Bacteriostasis

Xu Yan

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Abstract

The method of extracting natural preservative in Houttuynia cordata Thunb.and its bacteriostasis are studied in this paper.The results show that the optimal technical parameter of extracting natural preservatives from Houttuynia cordata Thunb.by edible alcohol is that the ratio of solid to liquid is 1:15,temperature of extract is 80℃ and time of extract is 10h.and that the alcohol extract of Houttuynia cordata Thunb.has strong inhibition effect on frequent pollution vaccine of laboratory food,the MIC is 6.25 mg/mL for Escherichia coli and Bacillus subtilis,is 12.5 mg/mL for Staphlococcus aureus,is 25 mg/mL for Hansenula sp.,is 50 mg/mL for Aspergillus sp.and Penicillium sp.,the range of active pH is 4～7 for Staphlococcus aureus,Escherichia coli and Bacillus subtilis,is 4～6 for Hansenula sp.

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What this paper is about

The method of extracting natural preservative in Houttuynia cordata Thunb.and its bacteriostasis are studied in this paper.The results show that the optimal technical parameter of extracting natural preservatives from Houttuynia cordata Thunb.by edible alcohol is that the ratio of solid to liquid is 1:15,temperature of extract is 80℃ and time of extract is 10h.and that the alcohol extract of Houttuynia cordata Thunb.has strong inhibition effect on frequent pollution vaccine of laboratory food,the MIC is 6.25 mg/mL for Escherichia coli and Bacillus subtilis,is 12.5 mg/mL for Staphlococcus aureus,is 25 mg/mL for Hansenula sp.,is 50 mg/mL for Aspergillus sp.and Penicillium sp.,the range of active pH is 4～7 for Staphlococcus aureus,Escherichia coli and Bacillus subtilis,is 4～6 for Hansenula sp.

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Available abstract

The method of extracting natural preservative in Houttuynia cordata Thunb.and its bacteriostasis are studied in this paper.The results show that the optimal technical parameter of extracting natural preservatives from Houttuynia cordata Thunb.by edible alcohol is that the ratio of solid to liquid is 1:15,temperature of extract is 80℃ and time of extract is 10h.and that the alcohol extract of Houttuynia cordata Thunb.has strong inhibition effect on frequent pollution vaccine of laboratory food,the MIC is 6.25 mg/mL for Escherichia coli and Bacillus subtilis,is 12.5 mg/mL for Staphlococcus aureus,is 25 mg/mL for Hansenula sp.,is 50 mg/mL for Aspergillus sp.and Penicillium sp.,the range of active pH is 4～7 for Staphlococcus aureus,Escherichia coli and Bacillus subtilis,is 4～6 for Hansenula sp.

Key concepts: Houttuynia cordata, Preservative, Bacillus subtilis, Penicillium, Escherichia coli, Food science, Chemistry, Aspergillus

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