Food Processing Commons^™

Effect Of Pulsed High Pressure Treatment On Preservative Properties Of Vacuum-Packed Roast Chicken, Liu Qinhua, Li Bin, Pan Runshu, Ma Hanjun

Food and Machinery

In order to evaluate the effect of pulsed high pressure treatment on preservative properties of vacuum-packed roast chicken, the amount of microorganism, the amount of lactic bacteria, pH value, TBARS value, sensory evaluate were studied. Results showed that pulsed high pressure treatments were effective in reducing microbial populations of roast chicken, and the microbial populations were lower over the storage period; the pH value and the TBARS value increased by pulsed number increasing, and they increased first and then decreased over the storage period; the effect of pulsed high pressure treatment on the sensory quality of roast chicken was negligible. …

Study On Contact Pressure And Mechanical Damage Of Apple Under Compression Using Pressure-Sensitive Film, Feng Zhe, Wu Jie

Food and Machinery

In order to accurately predict the bruise area of apple subjected to compressive loading, the pressure distribution characteristics for apple compressed at different loads was investigated by the pressure-sensitive film technique combined with apple bruise measurements. Furthermore, the relationship between contact pressure area and bruise area was investigated and the range of pressure area that closed to the bruise area was determined. The result showed that the value of apple flesh failure stress was 0.29 MPa. Pressure distribution on the pressure-sensitive film showed that pressure of 020～0.40 MPa accounted for 72% of the total pressure area and taken the major …

Study On Safeguard Mechanism Of Food Logistics In International Sports, Cheng Huijun

Food and Machinery

International sporting event food logistics is very important, is to decide whether it the key to the success of the event. The match supplies, which needed for safe and efficient, rapid and accurate delivery to the purchaser, is the goal of building event food logistics system. So, the event logistics demand forecast, logistics center location of the event, and the mode of operation of logistics, will be the event logistics security system building of the three pillars, and will be the event logistics security system building of the three pillars, which needed to be solved seriously study and practical.

Study On Gallic Acid-Modified Antioxidant Peptide From Agaricus Bisporus And Its Antioxidant Activities In Vitro, Zhang Qiang, Wu Caie, Zhu Changwei, Zi Shibo, Wang Cheng

Food and Machinery

With reducing power as the index of investigation, the preparation technology of gallic acid-modified antioxidant peptide from Agaricus Bisporus（GA—ABAP）was optimized by of orthogonal test and in vitro antioxidant activities of GA—ABAP. The results showed that the optimum preparation conditions of GA—ABAP were as followed: volume proportion of GA to ABAP of 5∶1, pH value of 11.0, heating time of microwave of 8 min. The comparison showed that the in vitro antioxidant activities of GA—ABAP prepared in this condition were remarkably improved, the reducing power and DPPH radical scavenging activity of GA—ABAP were 11.16 and 9.83 times higher than those of …

Preparation,Separation And Amino Acid Sequence Analysis Of Corn Oligopeptides With Antialcoholism Activity, Ma Wei, Dai Jun, Chen Shangwei, Zhu Song

Food and Machinery

Corn oligopeptides(COP) were prepared via enzymatic hydrolysis of destarched corn proteins by Alcalase 2.4L. By investigated COP antialcoholism activity in vitro and in vivo, it is found that COP has highly antialcoholism activity. Meanwhile, the scavenging rate of blood alcohol concentration is positively correlated with the dose of COP. COP were separated by Sephadex G-15 gel chromatogram and RP—HPLC step by step, then fraction COPⅢ-17 was separated with highly antialcoholism activity. UPLC—Q—TOF—MS analysis showed that its amino acid sequence: P-Y-L-P-L-L-P-S.

Separation, Monosaccharide Composition And Molecular Weight Analysis Of Polysaccharide From G. Lucidum Mycelium, Wang Haiyan, Dai Jun, Chen Shangwei

Food and Machinery

The polysaccharide was extracted from G. lucidum mycelium by submerged fermentation after previous hybird optimization. The polysaccharide of G. lucidum mycelium was separated by DEAE Sepharose fast flow column. Then we used high volume exclusion chromatography (HPSEC) to explore purity of three polysaccharide fractions and complete acid hydrolysis and PMP pre column derivatization RP—HPLC to measure the monosaccharide composition of them. At last, multi angle light scattering instrument combined with device (SEC—MALLS) was used to measure the Mw of polysaccharide fractions, while the slope of curves between the molecular rotation radius and molecular molar of moles inferred the space conformation …

Antioxidative Activity And Physical Property Of Polysaccharide From Ledum Palustre L., Zhang Qiaohui, Wang Jianzhong, Pang Jinhui, Cui Jie, Yang Zhe, Luo Xingwu

Food and Machinery

The polysaccharide was extracted from Ledum, and the content and characteristics of polysaccharide from Ledum were investigated by IR, UV spectra, thermal analysis (TG) and X-ray diffraction (XRD). The results from IR and UV spectra showed that the extracts containing the typical group of polysaccharide. It was noted that the content of Ledum polysaccharide was 69.95%. In addition, the antioxidant activity containing total reductive ability, scavenging ability for DPPH radical (DPPH·), hydroxyl radical (·OH) and superoxide anion radical (·O-2) were investigated. The results showed that the EC₅₀ for scavenging DPPH·, ·O-2, ·OH were 0.52, 1.41, 1.71 mg/mL, which means …

Separation And Enrichment Of Polyphenols From Sunflower Kernel With Mcroporous Resin, Xu Dandan, Zhang Wenbin, Yang Ruijin, Zhao Wei, Hua Xiao

Food and Machinery

An efficient preparative separation and enrichment process of polyphenols from sunflower kernel extracted by acid solution has been developed in the present study. 3-O-caffeoylquinic acid (CQA), 4-O-CQA and 5-O-CQA were identified as the main polyphenols in crude extract. The adsorption capacity and desorption ratio for total polyphenols of nine macroporous resins had been evaluated and XDA-1 resin was found to be the most suitable resin for the separation of polyphenols. It was found that ultrafiltration as preliminary treatment could improve the purity of crude extract from 4% to 15%. After that, the extract was submitted to XDA-1 resin column. The …

Optimization On Enzymatic Hydrolysis Process Of Soybean Protein By Grey Correlation Analysis, Qu Lingling, Guo Changhui, Liu Lijie, Zhang Na

Food and Machinery

Single factor experiments were conducted to explore the influence of different effects on soybean protein enzymolysis. Based on this, the model of proteolytic digestion process was built according to the grey correlation analysis method to expand application of grey correlation analysis method in food field and provide quality soybean polypeptide resources for the food industry. Alcalase alkaline protease (4.4×104 U/g) was used to enzymatic hydrolysis soybean defatted soybean meal to preparate soybean peptides. The correlation coefficient of reaction pH, reaction temperature, reaction time, soybean defatted soybean meal addition and Alcalase alkaline protease addition were calculated by grey correlation analysis method. …

Optimization On Enzymatic Preparation Of Antioxidant Peptide From Corbicula Fluminea By Control-Enzymatic Hydrolysis Method, Liu Jingjing, Jin Linfeng, Han Yaoping, Wang Xuefeng, Dai Yangjun

Food and Machinery

The optimal enzymolysis conditions of preparing antioxidant peptide from Corbicula fluminea were optimized. On the basic of single factor experiment such as kinds of proteases, dosage of protease, the ratio of material to liquid, enzymatic hydrolysis time, enzymatic hydrolysis temperature and pH, the effects of different factors and level on hydroxyl radical scavenging were researched by Box-Behnken center combination experiment and response surface analysis methods. The optimal hydrolysis conditions of preparing antioxidant peptide from Corbicula fluminea were that adding 0.94% neutral protease（by weight of Corbicula fluminea meat）, material to liquid ratio of 1∶2(m∶V), pH of 2.6，enzymatic hydrolysis temperature of 54.70 …

Optimization On Enzymolysis Processing For Muscle Of Onchidium Struma, Diao Ya, Shen Heding, Cheng Zhiqing, Yao Lixiang

Food and Machinery

The optimal enzymolysis processing for Onchidium struma muscle protein extraction by trypsin was investigated by response surface methodology and orthogonal design on the basis on the basis of single factor. The results showed that the optimum enzymolysis processing conditions via response surface methodology were as followed: enzymolysis temperature 45 ℃, enzymolysis time 2.3 h, pH value 9.0 and liquid-solid rate 92︰1(V︰m). And by the Orthogonal design, were enzymolysis temperature 45 ℃, enzymolysis time 2 h, pH value 9.0 and liquid-solid rate 90︰1(V︰m). The extraction protein rates by these of two methods were 8.74% and 8.52% respectively.

Study On Extraction Of Flavonoids From Poacynum Hendersonii By Suporcritical Co2, Shi Junyou, Jing Nianhua, Li Caixia

Food and Machinery

The supercritical CO2 extraction processing of flavonoids was optimized with Poacynum hendersonii leave as raw material. Firstly, the influences of the type and pH value for cosolvent were explored by single factor experiments. And the 70% ethanol with pH value of 10 was fixed as cosolvent. Then, the effects of extracting factors such as extracting pressure, temperature, time and cosolvent dosage, were investigated with orthogonal experiments. According to the researching report, the optimal process conditions were as follows: 150 g raw material, extraction temperature 45 ℃, extraction pressure 20 MPa, extraction time of 2 h, 70% ethanol with pH value …

Optimization Of Ultrasonic-Assisted Ethanol Extraction For Total Flavonoids From Buckwheat Hust, Yang Fang, Yang Wanlin, Chen Jinyu, Shao Jinliang, Lan Shanshan

Food and Machinery

The extraction of total flavonoids from buckwheat hust was optimized by ultrasound-assisted ethanol extraction method. Through the optimization by single factor, with extraction efficiency of total flavonoids, the effects of ultrasonic extraction time, ultrasonic extraction temperature, ethanol concentration and material-to-liquid ratio of total flavonoids from buckwheat hust were investigated. Through the optimization by response surface method, the optimal extraction conditions were found. The experimental results showed that the best conditions were ethanol concentration 69%, material-to-liquid ratio 1∶51(m∶V), extraction time 30 minute and ultrasonic extraction temperature 59 ℃, the yield rate of total flavonoids was 3.542%.

Improvement On Quality Of Rice Noodles By Screw Extrusion Technology, Tang Hanjun, Li Linjing, Zhu Wei

Food and Machinery

The treatments of screw extrusion technology on rice noodle (TDM, and XMM) and Fensi (TFS), and traditional craft rice noodles (WFM) were compared in the characteristics of quality, and the microstructure was observed after cooked. Physicochemical properties of TDM and XMM were between TFS and WFM before cook, and TDM was almost close to the best strength of TFS. Physicochemical properties after cook were the similarities between TDM and XMM, and close to TFS, further away from the WFM. Their microstructure characterized by irregular, polygonal honeycomb cellular structure, micro-Chamber diameter approximately 0.5~2.0 μm. The results showed that the screw extrusion …

Preparation Of Reconstitute Germination Sorghum Flake, Li Yan, Yi Cuiping, Li Mengting, Yang Yang

Food and Machinery

In order to improve the eating quality and nutrition quality of sorghum, reconstitute germination sorghum flakes were prepared by mixing germination sorghum with grain amaranth and non-waxy rice through screw extrusion and roller press. The protein and dietary fiber contents were used as the nutrition index and the processing formula was designed by software. The results indicated that the protein and dietary fiber contents got to 8.8% and 7.3%, respectively, when the products was prepared by mixing 17.3% of germination red sorghum, 18.1% of amaranth and 64.6% of non-waxy rice. And the contents of protein and dietary fiber were 9.5% …

Optimization Of Spray Drying Technology And Analysis Of Dissolution Characteristics On Fruit Powder From Akebia Trifoliate, Xiaoyan Da, Li Jiaxing, Xiao Xiufeng, Wu Yue, Ma Lang, Zhou Yanhui

Food and Machinery

Research on optimizing the spray dry preparation technology of Akebia trifoliate fruit powder and analyze its dissolution characteristics. First of all, the effects of dry agent dosage, pulp solids content, inlet air temperature, outlet air temperature on fruit powder yield were discussed by single factor tests. And then the spray drying process conditions were optimized by orthogonal test, and the dissolution characteristics was analyzed by detection of powder fluidity, solubility, dissolution time. The results showed that the optimal preparation conditions of Akebia trifoliate were as followed: malt dextrin dosage 16%, pulp solids content 20%, the inlet air temperature 150 ℃, …

Comparative Study On Germination Characteristics For Different Varieties Of Unpolished Coix Seed And Optimization Of Germinated Technological Conditions, Dang Juan, Qin Likang, Yang Xianlong, Jin Yi

Food and Machinery

This comparative study to analyze the changes in physiological and biochemical in the same condition by unpolished coix seed of 5 varieties that have been produced in Guizhou or Laos, selecting out optimal germination of varieties, then optimizing the germination rate and germination by using γ-amino butyric acid(GABA) as evaluation index, using single factor experiment and orthogonal design methods, tracing its main nutrients and functional components dynamically. The results showed that the sprouts of GZ-1 from Guizhou had the highest germination rate, free amino acids and γ-amino butyric acid (GABA) levels among the five varieties. Based on the sprouting rate …

Optimization Of L-Lysine Medium By Response Surface Methodology, Teng Guosheng, Liu Yong, Wu Lida, Fan Chunyan, Wang Jinzhi, Guan Bing, Shi Shuhui, Tong Yi

Food and Machinery

Plackett-Burman design, steepest ascent design and response surface methodology were used to optimize fermentation mediumof L-lysine. Plackett-Burman designmethod was applied to evaluate the main significant factors, and the result had shown that sodium chloride、magnesium sulfate and corn steep liquor were the major factors. Then, the Box-Behnken design and response surface methodology we used to confirm the optimum parameters with NaCl 2.72%, MgSO₄·7H₂O 0.05%, and corn steep liquor (CSL) 21.13 g/L, which were proceeded based on thegreatest response area of NaCl, MgSO₄·7H₂O and corn steep liquor. Under the optimal conditions, the theoretical yield …

Research Progress On Gas Storage And Transport Packaging Of Chinese Bayberry Fruit, Jiang Qiaojun, Zheng Yonghua, Xu Jing, Jiang Peishan

Food and Machinery

Reviewed the research progress in Chinese bayberry gas storage and transport packaging in recent years. Now the Chinese bayberry gas storage methods were mainly as followed: modified atmosphere, controlled atmosphere storage with N2, high CO2, superatmospheric oxygen and fixed gas proportion and so on. Chinese bayberry packaging transportation methods were mainly included: Foam Box + Ice, Plastic Box Packaging and Functional Fresh-keeping Packaging and so on. From the view of practical application, systematically elaborated the problem of this technology system，and points out such as the fast precooling, appropriate proportion of gases and dynamic monitoring, the solution of the mold problem …

Current Situation Of Food Safety Crime And The Criminal Law Perfection, Gong Tingting

Food and Machinery

The prevention and control of China's current food safety crimes has two problems: one is the awe force shortage on food safety crime punishment for criminal suspects; the other is serious lack of food safety regulatory system. In order to effectively solving the increasingly severe food safety crime problem, combined with Chinese national conditions, and based on the inspection experience on the basis of the prevention and control of foreign food safety crime, to strengthen the prevention and control of food safety crime criminal legislation work, should increase the intensity of punishment, set up the defects of food recall system …

Application Of Information Technology In Chinese Food Safety Management, Xiao Yumei, Xiao Fuqiang

Food and Machinery

The management of Chinese food safety is not optimistic right now. The mainly cause of this problem is the degree of food information in low procurement, production, circulation, and other aspects. Whether the government supervision departments or social forces are difficult to comprehensively collect and master the information related to food security. It can not form a timely and effective regulation. In the contrast, information technology is applied to the important link of the food safety management in the United States, the European Union and other developed countries or regions. The experiences of the developed countries should be taken as …

Real Dilemma And Improvement Of Food Industry Tourism Development, Lin Wenchao

Food and Machinery

Food industry tourism meets the needs of tourists seeking novelty, expands the brand influence and improves the trust of consumers on food safety, enable consumers to participate in food business management and promote the development of local economy. However, there are many problems in Chinese food industry tourism, for example the tourism project design is single, the degree of participation of visitors is not high, the food companies themselves do not pay enough attention, and lack of specialized hardware support, which cause a dilemma of development. In order to ensure the smooth development of food industrial tourism, some actions should …

Antioxidant Effect Of Spent, Ground, And Lyophilized Brew From Roasted Coffee In Frozen Cooked Pork Patties, Katrina Maryse Malixi Jully, Criselda Toto, Lilian Were

Food Science Faculty Articles and Research

The ability of light and dark roasted coffee (1 g/kg) in varying application forms (spent ground [SCG], whole ground [WGC], or lyophilized brew [LBC]) to inhibit lipid and protein oxidation in cooked pork patties stored at −18 °C was monitored over 3 months. Malondialdehyde (MDA) for the negative control (NC) increased from 0.31 to 1.11 mg MDA/kg pork over 3 months, while pork with coffee or rosemary oleoresin had lower values at month 3 (0.054–0.40 mg MDA/kg pork). The NC had the highest values for hexanal, octanal, and nonanal (2.59, 0.10, and 0.13 mg/kg pork, respectively), while light and dark …

Cold Plasma Inactivation Of Internalised Bacteria And Biofilms For Salmonella Enterica Serovar Typhimurium, Listeria Monocytogenes And Escherichia Coli, Dana Ziuzina, Lu Han, Patrick J. Cullen, Paula Bourke

Articles

Microbial biofilms and bacteria internalised in produce tissue may reduce the effectiveness of decontamination methods. In this study, the inactivation efficacy of in-package atmospheric cold plasma (ACP) afterglow was investigated against Salmonella Typhimurium, Listeria monocytogenes and Escherichia coli in the forms of planktonic cultures, biofilms formed on lettuce and associated bacteria internalised in lettuce tissue. Prepared lettuce broth (3%) was inoculated with bacteria resulting in a final concentration of ~ 7.0 log₁₀ CFU/ml. For biofilm formation and internalisation, lettuce pieces (5 × 5 cm) were dip-inoculated in bacterial suspension of ~ 7.0 log₁₀ CFU/ml for 2 h and …

Scaling Up Fruit And Vegetable Production: Is Machinery Sharing A Possibility?, Georgeanne M. Artz, Linda Naeve

Professional Agricultural Workers Journal

Abstract

Interest in local food is growing among consumers and small-scale farmers, as evidenced by the significant increase in the number of farmers’ markets, community-supported agriculture arrangements, and food hubs, in the last ten years. To meet the demand for locally grown fruits and vegetables, many small-scale farmers are considering scaling up their production. However, to remain profitable they need to balance production with increased labor costs and the need for specialized machinery. A study conducted in Iowa worked with five groups of farmers who shared different pieces of machinery. With help from the researchers, they developed sharing agreements and …

Cold Plasma Inactivation Of Bacterial Biofilms And Reduction Of Quorum Sensing Regulated Virulence Factors, Dana Ziuzina, Daniela Boehm, Sonal Patil, Patrick J. Cullen, Paula Bourke

Articles

The main objectives of this work were to investigate the effect of atmospheric cold plasma (ACP) against a range of microbial biofilms commonly implicated in foodborne and health- care associated human infections and against P. aeruginosa quorum sensing (QS)-regu- lated virulence factors, such as pyocyanin, elastase (Las B) and biofilm formation capacity post-ACP treatment. The effect of processing factors, namely treatment time and mode of plasma exposure on antimicrobial activity of ACP were also examined. Antibiofilm activity was assessed for E. coli, L. monocytogenes and S. aureus in terms of reduction of cultur- ability and retention of metabolic activity using …

Seasonal Prevalence Of Shiga-Toxin Producing Escherichia Coli On Beef Cattle Farms In Eastern Arkansas, Tiffani Elizabeth Breckenridge

Student Theses and Dissertations

Sixty-five million U.S. citizens become ill from foodborne bacteria annually; 73,000 of these bacterial illnesses are caused by Shiga-toxin producing Escherichia coli (STEC) O157. Cattle are a reservoir of STEC; therefore, STEC contamination of beef is a significant food safety concern in the U.S. On-farm STEC control measures may reduce the incidence of contamination in processing facilities. The objective of this study was to determine prevalence of O157 and non-O157 STEC on beef cattle farms in eastern Arkansas, and to possibly identify farm management and/or environmental risk factors associated with STEC prevalence in cattle. Rectal swab samples (10 cows per …

Experiments Of Mechanical Properties On White Radish, Lv Junlong, Yang Wei, Guo Hui

Food and Machinery

In order to obtain mechanical properties and provide necessary theoretical basis in the harvest, transportation, storage and industrial production of the white radish, mechanical properties (stress, elastic modulus) of white radish were measured and analyzed. Loading position, the loading direction, loading speed and moisture content were considered as affecting factors on the mechanical properties of white radish. Results showed that the compression capability of central position of white radish was stronger, and the lower position's was weaker (elastic modulus were 2.16, 2.07 MPa respectively). White radish was anisotropic. The axial compressive strength was stronger than in radial direction (the elastic …

Optimization On Protein Extraction From Walnut Dregs, Liu Shuangfeng, Wang Huasheng

Food and Machinery

Using orthogonally rotational combination design, alkali extraction and acid precipitation was proposed for extraction of protein from walnut dregs.The optimal preparation conditions of the protein were as follows: extracting pH 9.0, extracting time 124 min, extracting temperature 53 ℃ and solid-liquid ratio 1∶22 (m∶V). Under the conditions, the yield of protein was (67.94±005)%, and its isoelectric point was pH 5.0 .

Research Progress On Cold Chain Logistics Technique Of Vegetables, Yan Can, Liu Sheng, Jia Lie, Wang Da, Zhang Xiaofang

Food and Machinery

The postharvest vegetables have high respiration rate and are easy to perish at high temperature with high moisture. Therefore, it is very important for postharvest vegetables to precool the temperature approach the appropriate storage temperature. Then the vegetables are stored, transported, sold and preserved in fridges in the condition. Cold chain logistic is a physical method, keeping qualities and prolonging the shelf life of vegetables, and then providing customers with fresh, green, safety, nutrition vegetables. In this review, the author described situations and applications of precooling, storage, transportation and marketing of vegetables at home and abroad, which provide a reference …