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Vegetable salad dressing resisting tolisteria monocytogenes and preparation method of vegetable salad dressing

A Listeria and salad dressing technology, applied in food ingredients containing natural extracts, food science, etc., can solve the problems of endangering consumers' public health and high contamination rate of pathogenic bacteria, so as to ensure food safety Effect

Pending Publication Date: 2018-11-20
HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The law of listeriosis outbreaks in China is still unclear, but the contamination rate of the pathogen in various types of food has remained high, becoming a huge hidden danger to the public health of Chinese consumers

Method used

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  • Vegetable salad dressing resisting tolisteria monocytogenes and preparation method of vegetable salad dressing
  • Vegetable salad dressing resisting tolisteria monocytogenes and preparation method of vegetable salad dressing
  • Vegetable salad dressing resisting tolisteria monocytogenes and preparation method of vegetable salad dressing

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preparation example Construction

[0028] The present invention also provides a preparation method of above-mentioned anti-listeria vegetable salad dressing, comprising the following steps:

[0029] Thoroughly mix pomegranate peel extract, hibiscus calyx extract, oregano extract, cinnamon essential oil, olive oil, lemon juice and table salt to obtain anti-listeria vegetable salad dressing.

[0030] Here, pomegranate peel extract, hibiscus calyx extract, oregano extract, cinnamon essential oil, olive oil, lemon juice and table salt are all the same as above, and will not be repeated here.

[0031] In an embodiment of the present invention, the preparation method of pomegranate peel extract, hibiscus calyx extract and oregano extract are the same; the preparation method of pomegranate peel extract comprises the following steps:

[0032] Put the pomegranate peel in a blower dryer, dry it with hot air at 45°C for 48 hours, then finely grind the dried pomegranate peel, take 100g of dried pomegranate peel powder, soa...

Embodiment 1

[0044] The preparation method of pomegranate peel extract, hibiscus calyx extract and oregano extract is the same; the preparation method of pomegranate peel extract comprises the following steps:

[0045] Put the pomegranate peel in a blower dryer, dry it with hot air at 45°C for 48 hours, then finely grind the dried pomegranate peel, take 100g of dried pomegranate peel powder, soak it in 500mL of 70% ethanol aqueous solution, shake 240g 6h, then the solution was filtered with Whatman No. 1 filter paper; the obtained filtrate was evaporated in a rotary evaporator at 40°C until 90% of the liquid was evaporated to obtain a concentrated extract; and the concentrated extract was dried in a desiccator . The completely dried extract was weighed, then added to sterilized ultrapure water, shaken vigorously to ensure that the extract was completely dissolved, and then the extract solution was filtered and sterilized with a 0.22um Millipore filter to obtain a concentration of 10% Pome...

Embodiment 2

[0047] The preparation method of hibiscus calyx extract and oregano extract refers to the preparation method of pomegranate peel extract;

[0048] A preparation method for extracting cinnamon essential oil, comprising the following steps;

[0049] Grind cinnamon to obtain 40-60 mesh cinnamon granules; add 200g cinnamon granules to 500mL water, steam distill for 4 hours, and collect the distillate; vacuum evaporate the distillate at 40°C with a rotary evaporator until 90% of the liquid is evaporated , to obtain a concentrated extract; add sterilized ultrapure water to the concentrated extract to obtain cinnamon essential oil with a mass concentration of 10%, and store it in a brown reagent bottle at 4°C in the dark for future use;

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Abstract

The invention discloses a vegetable salad dressing resisting tolisteria monocytogenes and a preparation method of the vegetable salad dressing. The vegetable salad dressing is prepared by using natural antibacterial bio-active substances as a basic formula, mainly comprises the following components: pericarpium granati extract, shrub althea calyx extract, herba origani extract, cinnamon essentialoil, olive oil, lemon juice and table salt, contains no artificial chemical synthetic food additives, can effectively inactivate the listeria monocytogenes in vegetable salad, has excellent resistanceto the listeria monocytogenes, ensures health of consumers, and has a safer and more nutritional value. In addition, the vegetable salad dressing prepared in the invention ensures edible safety of vegetable salad products, ensures that the consumers can enjoy the safe and delicious vegetable salad at home, and also ensures that the consumers can obtain sufficient nutrients from vegetables.

Description

technical field [0001] The invention relates to the field of vegetable salad dressing, in particular to a listeria-resistant vegetable salad dressing and a preparation method thereof. Background technique [0002] At present, with the gradual improvement of consumers' health awareness and the country's vigorous implementation of the new version of China's dietary guidelines, consumers' consumption of fruit and vegetable products is increasing day by day. These convenient and delicious nutritious vegetable salads (cold dishes) are also more and more popular among consumers. However, since our country has no corresponding standard requirements for disinfection and cleaning of fruit and vegetable products after harvest, the outbreak of foodborne diseases related to vegetables in our country has been increasing, which has seriously affected the health of consumers and further affected the entire food safety of our country. Strategies create enormous negative impacts and burdens...

Claims

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Application Information

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IPC IPC(8): A23L27/60A23L29/00
CPCA23V2002/00A23L27/60A23L29/03A23V2250/21
Inventor 张若鸿杨洋刘志飞胡铁锋刘绍军许瑞刘素稳杜夏馨翟亚平姚玉洁严洁唐梓潇郑亚超张航李旭阳周肖楠张瑞雪张志强吴同磊蔡金星李军
Owner HEBEI NORMAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
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