CN109776550A - A kind of new bio alkali cpd in marine fungi source and its preparing the application in food preservative - Google Patents

A kind of new bio alkali cpd in marine fungi source and its preparing the application in food preservative Download PDF

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Publication number
CN109776550A
CN109776550A CN201910045696.2A CN201910045696A CN109776550A CN 109776550 A CN109776550 A CN 109776550A CN 201910045696 A CN201910045696 A CN 201910045696A CN 109776550 A CN109776550 A CN 109776550A
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new bio
alkali cpd
bio alkali
marine fungi
food
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CN109776550B (en
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黄纪国
黄锡山
陈维新
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Guangdong Industry Technical College
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Guangdong Industry Technical College
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Abstract

The invention belongs to food antiseptics and antibacterial field, disclose the new bio alkali cpd in a kind of marine fungi source and preparation method thereof and are preparing the application in food preservative.The structural formula of new bio alkali cpd such as formula (I) or (II) are shown.Such compound has significant antibacterial activity, can be used for preparing food preservative.Therefore, new bio alkali cpd provided by the invention has corrosion-resistant food applications prospect.

Description

A kind of new bio alkali cpd in marine fungi source and its preparing food antiseptic Application in agent
Technical field
The invention belongs to food antiseptic and antibacterial field, in particular to the new bio in a kind of marine fungi source, which alkalizes, to be closed Object and its preparing the application in food preservative.
Background technique
Food apoilage, which is primarily referred to as the effect based on microorganism, causes food quality to decline or lose edible value All variation.The nutritional ingredient abundant that food itself contains most easily makes microbial growth and mass propagation, and eventually leads to Food it is putrid and deteriorated.Therefore people attempt with various methods go prevent food spoilage, such as cryo-conservation, isolation air, drying, Using preservative etc., wherein the most commonly and effectively method is exactly to add preservative to inhibit or kill microorganism, to reach To corrosion-resistant purpose.Common anti-corrosion measure is addition food preservative, and food preservative is divided into chemical preservative, natural anticorrosion Agent and compound preservative, wherein the good antimicrobial effect, performance of chemical preservative be stable, the reasons such as cheap, using the most Extensively.
Novel Food Chemistry preservative is developed in the world, and the effect disquisition of preservative focuses mostly in its bacteriostasis. With the fast development of national economy and the continuous improvement of living standards of the people, food additives tend to develop novel resist The preservative that bacterium property is strong, security performance is high, cheap is just at inevitable trend.The present invention is generated by microbe fermentation method Preservative raw material, new Type of Preservatives is further obtained in manually modified mode, by bacteriostatic experiment the results show that with The related a variety of Grain-positives of food and negative bacteria have stronger killing effect, inhibit the growth of microorganism very fast, It has no toxic side effect after people, animal food, and activity is very strong in acid condition, is suitable for most of acid foods, especially beverage Anti-corrosion has good dissolubility and stability.And new food preservative is greatly mostly from natural products or preservative guide's chemical combination The important sources of object.The natural products in marine fungi metabolite source has sustainability, environmentally friendly, metabolite The features such as rich and varied is the novel source of novel organic molecule or anti-corrosion small molecule.The metabolite of fungi has extensive The various actives such as physiological activity, such as antibacterial, antitumor, immunological regulation is anti-inflammatory, and enzyme inhibits.What is therefrom found is novel with antibacterial Active metabolite is that the food preservative for developing marine source and application have important practical significance.
Summary of the invention
In order to overcome shortcoming and deficiency existing in the prior art, the primary purpose of the present invention is that it is true to provide a kind of ocean The new bio alkali cpd in bacterium source.
Another object of the present invention is to provide a kind of applications of the new bio alkali cpd in above-mentioned marine fungi source.
The object of the invention is achieved through the following technical solutions:
A kind of new bio alkali cpd in marine fungi source, the structural formula such as formula of the new bio alkali cpd (I) or shown in (II):
The new bio alkali cpd is to separate to obtain from the fermentation liquid of marine fungi Penicillium sp.JX-2-1 ?;Marine fungi Penicillium sp.JX-2-1 was deposited in Guangdong Province's Microbiological Culture Collection on January 4th, 2019 The heart (GDMCC), deposit number are GDMCC No:60525.
A kind of preparation method of the new bio alkali cpd in above-mentioned marine fungi source, including following operating procedure:
S1. marine fungi Penicillium sp.JX-2-1 is accessed into seed culture medium, shaking table culture obtains seed training Nutrient solution;
S2. seed culture fluid is accessed in fermentation medium, stationary culture, obtains tunning;
S3. thallus is obtained by filtration in tunning, thallus is extracted three times with methanol, and concentrated extracting solution obtains medicinal extract, medicinal extract Crude extract is extracted with ethyl acetate to obtain, ethyl acetate extract is chromatographed with silica gel normal-phase chromatography and is separated;With petroleum ether/second Acetoacetic ester is eluted, and is collected 10%~30% ethyl acetate/petroleum ether fraction, then use column chromatography for separation technology, is tied Structure formula new bio alkali cpd as shown in formula (I) or (II).
Preferably, average every liter of seed culture fluid described in S1 includes following components: 30 grams of glucose, 1 gram of yeast extract, 2-5 grams of peptone, 1-3 grams of agar, 1-5 grams of sodium chloride, water 1L.
Preferably, the condition of shaking table culture described in S1 is 80~150rpm of shaking speed, and 25~30 DEG C are cultivated 5~15 days.
Preferably, fermentation medium described in S2 is solid rice fermentation culture medium, consisting of rice and seawater are according to 1: 1.2 volume ratio mixing.
Preferably, the condition of stationary culture described in S2 is 25~30 DEG C of standings 25~50 days.
Preferably, column chromatography for separation technology silica gel column chromatography, gel filtration chromatography, C-18 reversed phase column chromatography described in S3.
A kind of new bio alkali cpd in above-mentioned marine fungi source is preparing the application in food preservative.
Compared with prior art, the present invention has the following advantages and beneficial effects:
The present invention provides the alkaloid compound in a kind of marine fungi source, such compound, which has, significantly inhibits antibacterial work Property, there is significant suppression to staphylococcus aureus, bacillus subtilis, Candida albicans, Escherichia coli or salmonella etc. respectively System activity can be used for preparing preservative for food antiseptic.Therefore, alkaloid compound provided by the invention has food antiseptic Application potential.
Specific embodiment
Further illustrate the present invention below in conjunction with specific embodiment, but embodiment the present invention is not done it is any type of It limits.
Unless stated otherwise, the present invention uses reagent, method and apparatus for the art conventional reagent, method and are set It is standby.
Unless stated otherwise, agents useful for same and material of the present invention are commercially available.
Embodiment 1: the separation and identification of fungi Penicillium sp.JX-2-1
1, material: the endogenetic fungus sample of the mangrove autumn eggplant leaf acquired from Guangzhou Nansha District seaside park.
2, by the culture of bacterial strain, separation, identification, the endogenetic fungal bacterial strain of pure mangrove autumn eggplant leaf is obtained, by mirror It is set to mould fungi Penicillium sp.JX-2-1.Mould fungi Penicillium sp.JX-2-1 was on January 4th, 2019 It is deposited in Guangdong Province's Culture Collection (GDMCC), deposit number is GDMCC No:60525, and classification naming is Penicilliumsp..The address of depositary institution is the compound the 59th of Xianlie Middle Road, Guangzhou City 100 5 building, building.
Embodiment 2: the preparation of new bio alkali cpd
1, separation prepares new bio alkali cpd from mould fungi Penicillium sp.JX-2-1 metabolite, Steps are as follows:
(1) seed culture of mould fungi Penicillium sp.JX-2-1:
Culture medium composition includes following components by average every liter: 30 grams of glucose, 1 gram of yeast extract, and peptone 2-5 Gram, 1-3 grams of agar, 1-5 grams of sodium chloride, water 1L;
Culture medium is made test tube slant, and picking bacterial strain accesses inclined-plane, 30 DEG C shaking table culture 3 days, obtain seed culture fluid.
(2) fermented and cultured of mould fungi Penicillium sp.JX-2-1:
It is 1:1.2 mixing that solid rice fermentation culture medium prescription, which is rice and seawater according to volume ratio,;
Bacterial strain in seed liquor is transferred in solid rice fermentation culture medium, controls 25~30 DEG C of temperature always, culture Time 25~50 days.
(3) above-mentioned hypha,hyphae methanol of having cultivated is extracted three times, concentrated extracting solution utilizes the concentrated extract of acquisition Column chromatography chromatogram separation;10~30% ethyl acetate/petroleum ether eluents are collected, then with columns layers such as silica gel, gel, C-18 reverse phases Analysis isolation technics is separated, and new bio alkali cpd is obtained.
2, the structured testing parsing of new bio alkali cpd
Structured testing parsing is carried out to new bio alkali cpd obtained above, obtains following tests data:
New bio alkali cpd: C18H14N2O5;HRESIMS:338.0907 [M+H]+(calculated value 338.0903); m.p.174–175℃;One-dimensional nuclear magnetic resonance data:1HNMR (400MHz, CDCl3) and carbon spectrum13CNMR(100MHz,CDCl3) such as The following table 1.
By identification, which is new bio alkali cpd, and structural formula is as follows:
1 Novel antibacterial active alkaloid nuclear magnetic data table of table
Embodiment 3: the bacteriostatic experiment of new bio alkali cpd
1, material:
Strain: Escherichia coli type strain (ATCC29522), staphylococcus aureus type strain (ATCC29213), withered grass bud The false silk beads coccus type strain (ATCC10231) of spore bacillus, salmonella, white;
Positive control: Ciprofloxacin (bacterial controls object) and Fluconazole (fungi reference material);
Solvent prepare: dimethyl sulfoxide (dimethyl smLfoxide, DMSO) be solvent (Sigma, St.Lo uis, Mo.)。
2, experimental method --- measurement minimum inhibitory concentration (MIC)
(1) preparation of bacterial suspension:
Staphylococcus aureus, Escherichia coli, bacillus subtilis, salmonella are inoculated in meat soup and LB culture medium respectively In, 37 DEG C are shaken bacterium for 24 hours;
One bacterium colony of Candida albicans picking, be added 1mL sand Borrow's culture medium, after mixing 35 DEG C shake bacterium for 24 hours~48h;Leaching Picking several bacterium colonies MH broth dilution, Maxwell adjust than turbid instrument (DENSIMAT, Bio-Merieux company) and try coccus before use Bacterial concentration is 0.5 maxwell reduced turbidity in managing, and is equivalent to 5 × 107,8Colony forming number (CFU)/mL bacteria containing amount, 1:10 dilution It is spare, inoculation in 10min.
(2) it uses doubling dilution to carry out vitro Drug bacteriostatic activity in 96 orifice plates to determine with sterile broth dilution sample and sun Property control drug to 4 times of final detectable concentrations of greatest hope, be added in detection hole, then carrying out 2 times to drug is serially diluted, and Equipped with no drug control well, the bacterium solution diluted is added in all detection holes and in no drug control well, every hole institute bacteria containing amount is about It is 5 × 105The hole cfu/.
3, experimental result
As a result the antibacterial MIC of new bio alkali cpd is measured50Value (g/mL) is shown in Table 2.
Bacteriostatic test result (the MIC of 2 new bio alkali cpd (I) of table50Value g/mL)
Bacteriostatic test result (the MIC of 3 new bio alkali cpd (II) of table50Value g/mL)
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention, It should be equivalent substitute mode, be included within the scope of the present invention.

Claims (3)

1. a kind of new bio alkali cpd in marine fungi source, it is characterised in that: the knot of the new bio alkali cpd Structure formula such as formula (I) or (II) are shown:
2. a kind of new bio alkali cpd in marine fungi source according to claim 1, it is characterised in that: described new Type alkaloid compound is to separate to obtain from the fermentation liquid of marine fungi Penicillium sp.JX-2-1;Marine fungi Penicillium sp.JX-2-1 is deposited in Guangdong Province's Culture Collection on January 4th, 2019, and deposit number is GDMCC No:60525.
3. a kind of new bio alkali cpd in marine fungi source according to claim 1 or 2 is preparing food antiseptic Application in agent.
CN201910045696.2A 2019-01-17 2019-01-17 Alkaloid compound derived from marine fungi and application thereof in preparation of food preservative Active CN109776550B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114957401A (en) * 2021-01-28 2022-08-30 广东轻工职业技术学院 Peptide compound derived from marine fungi as well as preparation method and application thereof

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WO2006059400A1 (en) * 2004-12-03 2006-06-08 The Kitasato Institute Antibiotics fki-2140, method of producing the same and strain producing the same
WO2008127663A1 (en) * 2007-04-11 2008-10-23 Teva Gyógyszergyár Zártköruen Muködo Részvénytársaság Method for reducing impurity level in mycophenolic acid fermentation
CN107721990A (en) * 2017-08-25 2018-02-23 中山大学 The iso-indole ketone compounds in a kind of marine fungi source and preparation method thereof and the application in anti-inflammatory drug is prepared

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN1088209A (en) * 1992-07-20 1994-06-22 惠乐康基金会集团公司 Heterogeneous ring compound
WO2006059400A1 (en) * 2004-12-03 2006-06-08 The Kitasato Institute Antibiotics fki-2140, method of producing the same and strain producing the same
WO2008127663A1 (en) * 2007-04-11 2008-10-23 Teva Gyógyszergyár Zártköruen Muködo Részvénytársaság Method for reducing impurity level in mycophenolic acid fermentation
CN107721990A (en) * 2017-08-25 2018-02-23 中山大学 The iso-indole ketone compounds in a kind of marine fungi source and preparation method thereof and the application in anti-inflammatory drug is prepared

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T. O. DZHASHI ET AL.: ""A NEW ROUTE FOR THE SYNTHESIS OF ISOMERIC BENZO[b]FUROINDOLES"", 《CHEMISTRY QF HETEROCYCLIC COMPOUNDS》 *

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Publication number Priority date Publication date Assignee Title
CN114957401A (en) * 2021-01-28 2022-08-30 广东轻工职业技术学院 Peptide compound derived from marine fungi as well as preparation method and application thereof
CN114957401B (en) * 2021-01-28 2023-04-28 广东轻工职业技术学院 Peptide compound from marine fungi and preparation method and application thereof

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