阅读说明：本技术 一种乳化稳定剂及含该乳化稳定剂的营养乳液 (Emulsion stabilizer and nutrient emulsion containing same ) 是由 魏星 武林贺 袁诚 李益 卢嘉颉 许文东 邓颖诗 黄乐坚 黄晓玲 刘菊妍 于 2019-10-17 设计创作，主要内容包括：本发明属于食品技术领域,公开一种乳化稳定剂及含该乳化稳定剂的营养乳液。该复配乳化稳定剂,含磷脂90％～95％、单双酸甘油脂1％～5％和月桂酸单甘油酯1～5％,同时,本发明还公开了一种含有上述复配乳化剂的特殊医学用途全营养粉制备方法。本发明提供的复配乳化剂,不仅能够提高全营养粉制备过程中乳液的稳定性和均匀性,改善均质后脂肪上浮的现象,使得乳液离心后仍可通过振荡复原,静置10小时不分层,保证了全营养粉制备过程中均质到喷雾干燥前乳液的稳定性；本发明提供的全营养粉配方具有优质动植物蛋白,脂肪酸搭配合理,营养全面,经过完整工艺即可制得特殊医学用途全营养配方粉。(The invention belongs to the technical field of food, and discloses an emulsion stabilizer and a nutritional emulsion containing the same. The compound emulsion stabilizer contains 90-95% of phospholipid, 1-5% of monoglyceride and 1-5% of lauric monoglyceride, and the invention also discloses a preparation method of the special medical use total nutrient powder containing the compound emulsifier. The compound emulsifier provided by the invention can improve the stability and uniformity of the emulsion in the preparation process of the full-nutrition powder, improve the floating phenomenon of fat after homogenization, ensure that the emulsion can be recovered by oscillation after centrifugation, and does not delaminate after standing for 10 hours, thereby ensuring the stability of the emulsion before homogenization and spray drying in the preparation process of the full-nutrition powder; the total nutrient powder formula provided by the invention has high-quality animal and plant proteins, reasonable fatty acid collocation and comprehensive nutrition, and can be prepared into total nutrient formula powder for special medical purposes through a complete process.)

1. The emulsion stabilizer is characterized by comprising the following components in percentage by mass: 90-95% of phospholipid, 1-5% of mono-diglyceride and 1-5% of lauric monoglyceride.

2. The emulsion stabilizer of claim 1, which is characterized by comprising the following components in percentage by mass: 95% of phospholipid, 1% -5% of mono-diglyceride and 1% -5% of lauric monoglyceride.

3. The emulsion stabilizer of claim 1, which is characterized by comprising the following components in percentage by mass: 95% of phospholipid, 3% of mono-diglyceride and 2% of lauric monoglyceride.

4. The emulsion stabilizer of claim 1, which is characterized by comprising the following components in percentage by mass: 95% of phospholipid, 1% of mono-diglyceride and 4% of lauric monoglyceride.

5. A nutritional emulsion containing the emulsion stabilizer of any one of claims 1 to 4, which is characterized by comprising the following components in percentage by mass: 0.5-3 parts of emulsion stabilizer, 41-121 parts of protein, 125-375 parts of carbohydrate, 25-76 parts of grease, 0.6-0.9 part of vitamin and 5.3-8.0 parts of trace elements.

6. The nutritional emulsion of claim 5 wherein the nutritional emulsion has a solids content of from 15% to 25%.

7. The nutritional emulsion according to claim 6, comprising the following components in mass specific gravity: 0.5-3 parts of emulsion stabilizer, 17-50 parts of whey protein, 13-38 parts of casein, 11-33 parts of soybean protein isolate, 125-375 parts of maltodextrin, 6-18 parts of soybean oil, 6-18 parts of rapeseed oil, 13-40 parts of medium-chain triglyceride, 0.0006528-0.0009792 parts of folic acid, 0.01222680-0.01833960 parts of pantothenic acid, 0.02264280-0.03396480 parts of nicotinamide, 0.00007488-0.00011232 parts of biotin, 0.00414720-0.00622080 parts of thiamine, 0.00000576-0.00000864 parts of cyanocobalamine, 0.00367200-0.00550800 parts of pyridoxine, 0.00002160-0.00003240 parts of cholecalciferol, 0.00010800-0.00016200 parts of plant menadione, 0.001455-0.002182 parts of retinol, 0.002182-0.002182 parts of L-ascorbic acid, 0.002182-0.002182 parts of D-alpha-tocopherol alpha-TE 0.002182-0.002182 parts of potassium chloride-0.002182 parts, 0.002182 parts of sodium selenite, 0.002182-0.002182 parts of potassium dihydrogen phosphate, 0.002182-0.002182 parts of sodium citrate-0.002182 parts of sodium iodide, 0.002182 parts of sodium phosphate, 0.002182 parts of sodium citrate-0.002182 parts of 0.002182 parts, 0.01600200-0.02399400 parts of ferrous sulfate, 0.00086400-0.00129600 parts of copper sulfate, 0.01040400-0.01560600 parts of zinc sulfate, 0.00383400-0.00576000 parts of manganese sulfate, 0.28800000-0.43200000 parts of magnesium oxide and 1440-1760 parts of water.

8. The nutritional emulsion of claim 7 wherein the medium chain triglyceride is caprylic capric triglyceride.

9. A method for preparing a nutritional emulsion according to claim 7, comprising the steps of:

A. preparation of an aqueous phase: weighing aqueous phase components in amounts including the whey protein, the casein, the soy protein isolate, the maltodextrin, the folic acid, the pantothenic acid, the nicotinamide, the biotin, the thiamine, the cyanocobalamin, the pyridoxine, the cholecalciferol, the plant menadione, the retinol, the riboflavin, the L-ascorbic acid, the D-alpha-tocopherol, the potassium chloride, the sodium selenite, the potassium iodide, the potassium dihydrogen phosphate, the calcium carbonate, the sodium citrate, the potassium citrate, the ferrous sulfate, the copper sulfate, the zinc sulfate, the manganese sulfate, the magnesium oxide; uniformly mixing the components, adding the water at the constant temperature of 20-30 ℃, and uniformly stirring at the shear speed or the rotating speed of 4000-6000 rpm/min by using a shearing machine or a stirring machine to obtain a water-phase mixture;

B. preparing an oil phase: weighing oil phase components in amounts, said oil phase components comprising said soybean oil, said rapeseed oil, said medium chain triglycerides, said phospholipids, said monoglycerides and said monoglycerides of lauric acid; uniformly stirring the oil phase components at a constant temperature of 20-30 ℃ by using a stirrer at a rotating speed of 400-800 rpm/min to obtain an oil phase mixture;

C. cooling and homogenizing: pouring the prepared oil phase mixture into the water phase mixture, and emulsifying for 2-10 min at a shear speed or a rotating speed of 3000-5000 rpm/min by using a shearing machine or a stirring machine under the constant temperature condition of 20-30 ℃; homogenizing the emulsified mixture for 1-4 times under the homogenizing pressure of 100-400 bar; and cooling the homogenized mixture to 2-10 ℃, and then sending the mixture into a volumetric tank to obtain the nutritional emulsion.

10. Use of an emulsion stabilizer according to claim 1 for the preparation of a nutritional milk powder.

Technical Field

The invention belongs to the technical field of formula foods for special medical purposes, and particularly relates to an emulsion stabilizer and a nutritional emulsion containing the same.

Background

The food with special medical application (hereinafter referred to as special medical food) has important effects on the aspects of nutrition and dietary supplement of people with limited food intake, digestive absorption disorder, metabolic disorder or specific disease states. The special medical food is large in number of people and mature in foreign countries, but the domestic market is in a large blank state at present. Most of the market share of special medical food in China is occupied by foreign enterprises, domestic enterprises mainly imitate foreign products because of late industry entry, and the problems that the food has fewer or single nutritional ingredients and cannot provide enough nutrition after the technology falls generally exist. Proved by the present, the special medical food has obvious application advantages in the aspect of clinical treatment, can improve the nutritional status, correct the negative nitrogen balance and enhance the body resistance; patients used before surgery have enough nutrient reserves to increase the tolerance to surgery and anesthesia; the postoperative supplement is beneficial to reducing complications such as infection and the like and promoting the healing of wounds, thereby reducing the medical expense, shortening the hospitalization days and improving the life quality of patients.

The full-nutrition formula powder for special medical purposes is nutritional powder obtained by dissolving, shearing, homogenizing, sterilizing, falling film concentrating and spray drying all nutrients, and the system is always in a liquid suspension state before spray drying, so that the stability of the emulsion (system) is particularly important to ensure. In consideration of the continuity of industrial mass production, the spray drying tower is in a long-time working state, so that the emulsion needs to be continuously conveyed to the spray drying tower, and the water evaporation capacity of the spray tower is limited. The stability and homogeneity of the emulsion at low temperatures are of particular importance.

The existing emulsion stabilizer has poor general stabilizing effect and can only stably store the emulsion for a short time. When the drying tower is busy and the emulsion needs to be temporarily stored for a long time, the emulsion is easy to lose stability and cannot be used, which brings difficulty to engineering regulation. Therefore, it is desired to increase the stability and prolong the storage time of the emulsion without affecting the quality of the emulsion.

Disclosure of Invention

The invention aims to solve the problems of stability of a preparation process of the nutritional milk powder and the like, and provides a compound emulsion stabilizer capable of stabilizing emulsion in a preparation process.

In order to solve the technical problems, the invention adopts the following technical scheme:

an emulsion stabilizer comprises the following components in percentage by mass: 90-95% of phospholipid, 1-5% of mono-diglyceride and 1-5% of lauric monoglyceride.

Further, the composition comprises the following components in percentage by mass: 95% of phospholipid, 1% -5% of mono-diglyceride and 1% -5% of lauric monoglyceride.

Further, the composition comprises the following components in percentage by mass: 95% of phospholipid, 3% of mono-diglyceride and 2% of lauric monoglyceride.

Further, the composition comprises the following components in percentage by mass: 95% of phospholipid, 1% of mono-diglyceride and 4% of lauric monoglyceride.

The total monoglyceride of the mono-diglyceride is more than 90% based on the GB 1886.65 standard.

Phospholipid performance criteria: GB 28401.

Lauric acid monoglyceride: GB 1886.65.

A nutrient emulsion containing the emulsion stabilizer comprises the following components in percentage by mass: 0.5-3 parts of emulsion stabilizer, 41-121 parts of protein, 125-375 parts of carbohydrate, 25-76 parts of grease, 0.6-0.9 part of vitamin and 5.3-8.0 parts of trace elements.

Furthermore, the solid content of the nutritional emulsion is 15-25%.

The low or high solid content has little influence on the emulsification system, and is reflected in the production process. Too low a solid content results in waste of resources, but too high a content has an effect on the homogenizing equipment. The solid content is preferably 15 to 25%.

Further, the composite material comprises the following components in percentage by mass: 0.5-3 parts of emulsion stabilizer, 17-50 parts of whey protein, 13-38 parts of casein, 11-33 parts of soybean protein isolate, 125-375 parts of maltodextrin, 6-18 parts of soybean oil, 6-18 parts of rapeseed oil, 13-40 parts of medium-chain triglyceride, 0.0006528-0.0009792 parts of folic acid, 0.01222680-0.01833960 parts of pantothenic acid, 0.02264280-0.03396480 parts of nicotinamide, 0.00007488-0.00011232 parts of biotin, 0.00414720-0.00622080 parts of thiamine, 0.00000576-0.00000864 parts of cyanocobalamine, 0.00367200-0.00550800 parts of pyridoxine, 0.00002160-0.00003240 parts of cholecalciferol, 0.00010800-0.00016200 parts of plant menadione, 0.001455-0.002182 parts of retinol, 0.002182-0.002182 parts of L-ascorbic acid, 0.002182-0.002182 parts of D-alpha-tocopherol alpha-TE 0.002182-0.002182 parts of potassium chloride-0.002182 parts, 0.002182 parts of sodium selenite, 0.002182-0.002182 parts of potassium dihydrogen phosphate, 0.002182-0.002182 parts of sodium citrate-0.002182 parts of sodium iodide, 0.002182 parts of sodium phosphate, 0.002182 parts of sodium citrate-0.002182 parts of 0.002182 parts, 0.01600200-0.02399400 parts of ferrous sulfate, 0.00086400-0.00129600 parts of copper sulfate, 0.01040400-0.01560600 parts of zinc sulfate, 0.00383400-0.00576000 parts of manganese sulfate, 0.28800000-0.43200000 parts of magnesium oxide and 1440-1760 parts of water.

Further, the medium-chain triglyceride is caprylic capric triglyceride.

Whey protein, casein and soy protein isolate are all proteins, are essential substances in human life activities, and contribute to the formation and growth of tissues. Maltodextrins provide carbohydrates, which are essential substances and major sources of energy for human survival. Fats such as soybean oil, rapeseed oil, and medium chain triglycerides provide high energy and essential fatty acids for human body. Among the vitamins, folic acid contains vitamin B9; pantothenic acid contains vitamin B5; nicotinoylaminic nicotinic acid, vitamin B3; thiamine contains vitamin B1; cyanocobalamin contains vitamin B12; pyridoxine contains vitamin B6; cholecalciferol contains vitamin D3; the plant menadione contains vitamin K1; retinol RE contains vitamin a; riboflavin contains vitamin B2; l-ascorbic acid contains vitamin C; d-alpha-tocopherol alpha-TE contains vitamin E. Among the trace elements, potassium chloride contains chlorine elements; sodium selenite contains selenium element; potassium iodide contains iodine elements; potassium dihydrogen phosphate contains phosphorus element; calcium carbonate contains calcium elements; the sodium citrate contains sodium element; the potassium citrate contains potassium element; ferrous sulfate contains iron element; copper sulfate contains copper element; zinc sulfate contains zinc element; manganese sulfate contains manganese elements; the magnesium oxide contains magnesium element. All the above are essential nutrient elements for human body rehabilitation.

The preparation method of the nutritional emulsion is characterized by comprising the following steps:

A. preparation of an aqueous phase: weighing aqueous phase components in amounts including the whey protein, the casein, the soy protein isolate, the maltodextrin, the folic acid, the pantothenic acid, the nicotinamide, the biotin, the thiamine, the cyanocobalamin, the pyridoxine, the cholecalciferol, the plant menadione, the retinol, the riboflavin, the L-ascorbic acid, the D-alpha-tocopherol, the potassium chloride, the sodium selenite, the potassium iodide, the potassium dihydrogen phosphate, the calcium carbonate, the sodium citrate, the potassium citrate, the ferrous sulfate, the copper sulfate, the zinc sulfate, the manganese sulfate, the magnesium oxide; uniformly mixing the components, adding the water at the constant temperature of 20-30 ℃, and uniformly stirring at the shear speed or the rotating speed of 4000-6000 rpm/min by using a shearing machine or a stirring machine to obtain a water-phase mixture;

B. preparing an oil phase: weighing oil phase components in amounts, said oil phase components comprising said soybean oil, said rapeseed oil, said caprylic/capric triglyceride or medium chain triglyceride, said phospholipid, said mono-diglyceride, and said monolaurin; uniformly stirring the oil phase components at a constant temperature of 20-30 ℃ by using a stirrer at a rotating speed of 400-800 rpm/min to obtain an oil phase mixture;

C. cooling and homogenizing: pouring the prepared oil phase mixture into the water phase mixture, and emulsifying for 2-10 min at a shear speed or a rotating speed of 3000-5000 rpm/min by using a shearing machine or a stirring machine under the constant temperature condition of 20-30 ℃; homogenizing the emulsified mixture for 1-4 times under the homogenizing pressure of 100-400 bar; and cooling the homogenized mixture to 2-10 ℃, and then sending the mixture into a volumetric tank to obtain the nutritional emulsion.

The preparation of the nutritional emulsion is a process before spray drying of the total nutrient powder, and the prepared nutritional emulsion is an intermediate product for preparing the total nutrient powder. According to the production process, after the steps are completed, sterilization, concentration and drying can be carried out, and the final product is obtained after spray drying and is in a powdery form. However, spray drying is a complex process, including evaporation concentration and spray drying, the evaporation capacity of water in spray is limited, the upper limit of single-tower treatment is 500kg/h, the single liquid preparation of the emulsion can reach about 3000kg, and the minimum amount of the emulsion is about 1500kg after concentration, namely, the single liquid preparation needs more than three hours to completely complete the spray drying. In consideration of the production continuity, temporary storage tanks are arranged in the process and cannot temporarily store the concentrated and sprayed emulsion. When the working procedures are coordinated accurately and the equipment runs well, the temporary storage time is extremely short, even partial emulsion does not need to be subjected to temporary storage at all; however, when the process coordination is careless or the equipment operation is failed, the temporary storage time of the period becomes longer. When the temporary storage time is prolonged, the problems of instability and fat floating are easy to occur in the intermediate emulsion using the traditional emulsion stabilizer, so that the intermediate emulsion cannot be used, and the waste of resources and the reduction of efficiency are caused. And used the middle emulsion of this application emulsion stabilizer, can obtain very big promotion in the aspect of stability, contrast and use traditional emulsion stabilizer, the shelf life can stably prolong more than 6 hours, also can not take place the problem of unstability and fat come-up easily in longer temporary storage time, strives for more valuable time for process adjustment and equipment maintenance and maintenance etc.. Therefore, under the condition that the temporary storage quality guarantee time is stably prolonged, the liquid can be prepared more intensively, and the production efficiency is improved.

An application of the emulsion stabilizer is used for preparing nutritional milk powder.

Compared with the prior art, the implementation of the invention has the following beneficial effects:

the compound emulsifier provided by the invention can improve the stability and uniformity of the emulsion in the preparation process of the full-nutrition powder, improve the floating phenomenon of fat after homogenization, ensure that the emulsion can be recovered by oscillation after centrifugation, and does not delaminate after standing for 10 hours, thereby ensuring the stability of the emulsion before homogenization and spray drying in the preparation process of the full-nutrition powder; the total nutrient powder formula provided by the invention has high-quality animal and plant proteins, reasonable fatty acid collocation and comprehensive nutrition, and can be prepared into total nutrient formula powder for special medical purposes through a complete process.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the following specific examples.