16s Rrna Gene Sequence Analysis Of Acetic And Lactic Acid Bacteria Isolated From Philippine Sugarcane Wine (Basi) [Research Note],
2021
University of the Philippines Los Banos
16s Rrna Gene Sequence Analysis Of Acetic And Lactic Acid Bacteria Isolated From Philippine Sugarcane Wine (Basi) [Research Note], John Russel G. Sevilla, Michael Angelo S. Esteban, Honey Bhabes R. Iñigo, Audrey May V. Orillaza, Baby Richard R. Navarro
The Philippine Agricultural Scientist
Basi, a traditional sugarcane wine of the Philippines, was studied. Here, we used molecular- and cultural-based methods to isolate, identify and characterize acid-producing bacteria, specifically acetic and lactic acid bacteria, from basi. Acid producers were focused on owing to the rapid spoilage of basi via acidification with air exposure. Two strains each of acetic and lactic acid bacteria were isolated. DNA was extracted from these isolates. PCR-amplified DNA products were subjected to 16S rRNA gene sequencing. The sequences of the isolates were then aligned with BLAST database sequences and found to have high similarities to Acetobacter malorum (99%), …
Postharvest Salicylic Acid And Melatonin Dipping Delay Ripening And Improve Quality Of ‘Sensation’ Mangoes,
2021
King Abdulaziz University, Jeddah, Saudi Arabia
Postharvest Salicylic Acid And Melatonin Dipping Delay Ripening And Improve Quality Of ‘Sensation’ Mangoes, Mohamed A. Awad, Adel D. Al-Qurashi
The Philippine Agricultural Scientist
Freshly harvested mature-green ‘Sensation’ mangoes were dipped for 10 min in 2 mM salicylic acid (SA) and 0.2 mM melatonin (MT) alone or in combination and stored at 23±1°C and 60–70%RH. SA or MT delayed ripening measured as higher green peel color (lower a* values), firmness, titratable acidity (TA) and membrane stability index (MSI) and lower weight loss, total soluble solids (TSS), TSS/TA ratio and hydrolytic enzyme activities (polygalacturonase, xylanase and α-amylase) compared to that of untreated fruit. Total phenolic content (TPC) in peel of treated fruit increased with fluctuations during ripening and was higher than the control. In pulp, …
Isolation, Identification And Growth Characteristics Of A Strain Of Lactic Acid Bacteria With Efficient Antimicrobial Activity,
2021
College of Food and Bioengineering, Henan University of Science and Technology, Luoyang, Henan 471023, China
Isolation, Identification And Growth Characteristics Of A Strain Of Lactic Acid Bacteria With Efficient Antimicrobial Activity, Xu Yun-Feng, Zhang Xin, Chu Ze-Jun, Zhang Meng, Zhang Min, Chen Jun-Liang
Food and Machinery
A strain of lactic acid bacteria with high antibacterial activity was isolated from home-made sauerkraut in Inner Mongolia, and its growth characteristics were determined. The strain was identified as Lactobacillus plantarum by colony morphology observation, physiological and biochemical identification and 16S rDNA sequence analysis. This strain had good antibacterial effects on Staphylococcus aureus and Escherichia coli with the diameters of inhibition zone of 15.5 and 14.5 mm, respectively. The results of growth curve showed that the OD600 nm value began to increase rapidly when the strain grew to about 8 h, and entered the logarithmic growth phase; the pH …
Study On Quantitative Detection Of Soluble Solids And Firmness Of Yellow Peach Chips By Near-Infrared Spectroscopy,
2021
College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
Study On Quantitative Detection Of Soluble Solids And Firmness Of Yellow Peach Chips By Near-Infrared Spectroscopy, Cao Nian-Nian, Liu Qiang, Peng Jing, Tu Kang, Zhao Bao-Ming, Zhu Jin-Xing, Pan Lei-Qing
Food and Machinery
The spectral data was collected by using two different infrared spectroscopies with 400 to 1 000 nm (visible-shortwave) and 1 000 to 2 500 nm (longwave) from yellow peach chips. Then four mathematic algorithms, i. e. standard normal variate transformation (SNV), multiplicative scatter correction (MSC), moving-average smoothing (MS) and 1st-derivative (1-Der), were utilized in data preprocessing. Regression models by linear partial least squares (PLS) and non-liner support vector machine (SVM) were constructed for the predicting the soluble solids content (SSC) and firmness in yellow peach chips, respectively. Moreover, the feasibility analysis for prediction of SSC and firmness were vitrificated by …
Identification Of Degradation Products Of Methidathion And Its Determination Of Residues In Vegetables,
2021
Hubei Provincial Institute for Food Supervision and Test, Wuhan, Hubei 430070, China; Hubei Provincial Engineering and Technology Research Center for Food Quality and Safety Test, Wuhan, Hubei 430070, China
Identification Of Degradation Products Of Methidathion And Its Determination Of Residues In Vegetables, Zhu Zheng-Wei, Chen Li, Wu Wan-Qin, Jiang Feng, Fang Xiao-Long, Wang Hui-Xia
Food and Machinery
In this paper, the degradation products of methidathion in water under natural conditions was identified, and then the components of commercially available methidathion pesticides were analyzed, finally the detection method of methidathion and its degradation product in vegetables was established by using QuEChERS pretreatment method. The results showed that the degradation product of methidathion in water was methidathion-oxon. In addition to methidathion, the content of its degradation product was as high as 1.5 g/kg. The linearity of the detection method was good over the concentration range of 1 ng/mL to 100 ng/mL (R2≥0.99). The recoveries was 62.9%~97.2% and …
Design And Experiment Of Ultrasound-Array-Assisted Enzymatic Hydrolysis Control System Based On Plc,
2021
School of Mechanical Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China;School of Food and Biological Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China
Design And Experiment Of Ultrasound-Array-Assisted Enzymatic Hydrolysis Control System Based On Plc, Ding Yan-Hua, Ma Hai-Le, Qu Wen-Juan, Xiao Feng
Food and Machinery
At present, the frequency and mode of ultrasonic equipment used in most of the studies of ultrasound-assisted enzymatic hydrolysis are single, and the chemical parameters in the process cannot be measured in real time. In this paper, a programmable logic controller (PLC) based control system of S-type ultrasonic-array-assisted enzymatic hydrolysis was designed. The single-, dual-and triple-frequency mode switching of five frequencies was realized, and a mathematical model with ACE (Angiotensin I-converting enzyme) inhibition rate as an index was established by using near-infrared spectroscopy and PLC control. Therefore, the end-point of enzymatic hydrolysis could be determined by real-time on-line in situ …
The Simulation Study On Factors Influencing The Oil Yielding Rate Of Oil Seeds In Twin-Screw Press,
2021
School of Mechanical Engineering, Wuhan Polytechnic University, Wuhan, Hubei 430023, China
The Simulation Study On Factors Influencing The Oil Yielding Rate Of Oil Seeds In Twin-Screw Press, Feng Xin-Dong, Song Shao-Yun, Yang Hai-Lun
Food and Machinery
Simulation analysis of the oilcake pressing process was carried out to explore the effect of oilcake thickness and the speed of the press screw on the oil yielding rate, and ANOVA was performed on the test results. The results showed that both oilcake thickness and the speed of the press screw had a significant effect on the oil yield, and that the effect of oilcake thickness was more significant. There was a significant linear relationship between the oil yield and the thickness of the oilcake, with the oil yielding rate decreasing with the thickness of the oilcake; the oil yielding …
The Effect Of Drying Methods On The Microscopic Properties, Ingredients And Antioxidant Activity Of Poria Cocos Products,
2021
College of Bioscience and Biotechnology, Hunan Agricultural University, Changsha, Hunan 410128, China; Hunan Engineering Laboratory for Good Agricultural Practice and Comprehensive Utilization of Famous-Region Medicinal Plants, Changsha, Hunan 410128, China; Jingzhou Kangyuan Lingye Technology Co., Ltd., Huaihua, Hunan 418400, China
The Effect Of Drying Methods On The Microscopic Properties, Ingredients And Antioxidant Activity Of Poria Cocos Products, Xiao Yang-Bo, Liu Qi, Peng Yi-Si, Xiong Shi-Jun, Peng Guo-Ping
Food and Machinery
In this research, vacuum freeze-drying, constant temperature of 40 ℃，constant temperature of 60 ℃, constant temperature of 100 ℃, constant temperature of 120 ℃, sun drying and variable temperature drying with air energy were used to dry Poria cocos, and the effects of different drying methods were studied on mycelium microscopic characteristics, water-soluble polysaccharide content, water-soluble protein content, alcohol-soluble protein content and antioxidant activity of Poria cocos. Results: The Poria cocos mycelium of variable temperature drying with air energy and sun drying were loosely arranged, and the Poria cocos mycelium of constant temperature drying was in a bond state. The …
Determination Of Four Synthetic Antioxidants In Edible Vegetable Oil By Gas Chromatography-Mass Spectrometry Coupled With Quechers,
2021
Zhongshan Institute for Food and Drug Control, Zhongshan, Guangdong 528437, China
Determination Of Four Synthetic Antioxidants In Edible Vegetable Oil By Gas Chromatography-Mass Spectrometry Coupled With Quechers, Zheng Hong-Tao, Liu Zi-Xiong, Wei Rong, Xie Guo-Dan, Dong Hai, Tan Gui-Liang
Food and Machinery
To establish a gas chromatography-mass spectrometry (GC-MS) method for the rapid determination of four synthetic antioxidants (BHT, BHA, TBHQ, and Ionox-100) in seven kinds of edible vegetable oils by QuEChERS assisted with ultrasonic extraction and purification. After ultrasonic extraction with acetonitrile, the samples were purified by QuEChERS technology, DB-35MS capillary column (30 m × 0.250 mm × 0.25 μm) was used for separation of analytes and ion monitoring (SIM) mode was selected for determination. The analytes were quantified by external standard method. The results indicated that the linear range of synthetic antioxidants was 0.5~20.0 μg/mL, and the correlation coefficient (R …
Stability Of Sheep Liver Protein And Effects Of Nacl Concentration On Its Functional Characteristics,
2021
School of Biotechnology and Food Science, Tianjin Key Laboratory of Food Biotechnology, Tianjin University of Commerce, Tianjin 300134, China
Stability Of Sheep Liver Protein And Effects Of Nacl Concentration On Its Functional Characteristics, Zhang Xiao-Yan, Wu Zi-Jian, Lu Jian-Kang, Hou Hui-Jing, Liu Hao-Jie, Meng Ling-Li, Zhao Ying-Tao
Food and Machinery
Differential scanning calorimetry, laser particle size distribution instrument and other instrumental analysis methods were used to study the stability of sheep liver protein, as well as effects of NaCl content (0.0%, 1.8%, 3.6%) on sheep liver protein. Emulsifying & foaming properties, molecular weight distribution and surface hydrophobicity were evaluated. Results showed that with the increase of NaCl content, the surface hydrophobicity of water soluble liver proteins (WSLP) and salt soluble liver proteins (SSLP) also increased; the denaturation temperature of SSLP was 87.9 ℃, higher than that of WSLP (74.4 ℃), showing that SSLP had better thermal stability; and the particle …
Isolation, Identification And Growth Characteristics Of Yeast In The Air Of Luzhou-Flavor Liquor Brewing Workshop,
2021
Key Laboratory of Brewing Biotechnology and Application of Sichuan Provincet, Sichuan University of Science & Engneering, Yibin, Sichuan 644000, China
Isolation, Identification And Growth Characteristics Of Yeast In The Air Of Luzhou-Flavor Liquor Brewing Workshop, Huang Zhi-Guo, Peng Si-Jie, Li Hao, Zhong Shu-Xia, Deng Jie, Ren Zhi-Qiang, Wei Chun-Hui
Food and Machinery
In this study, four yeast strains in the Luzhou-flavor liquor brewing workshop were isolated and purified from the air. The colony physiological, biochemical and molecular identifica-tion were performed to obtain two kinds of yeast, R. mucilaginosa and M. guilliermondii. The growth characteristics of the two kinds of yeasts were studied, and the optimal growth time were found to be 29 to 30 h. The tolerance of M. guilliermondii to ethanol, temperature and acid is higher than that of R. mucilaginosa. By using GC-MS to analyze the metabolites, the dominant products of the two yeasts were determined to be ethanol and …
Effect Of Low Dose X Ray On Barley Germination And Analysis Of System Dynamics Mechanism,
2021
Shandong Sport University, School of Sport Social Science, Sport Nutrition and Intelligent Cooking Laboratory, Jinan, Shandong 250102, China
Effect Of Low Dose X Ray On Barley Germination And Analysis Of System Dynamics Mechanism, Dong Chen, Wang Wei, Zhang Yi, Zhang Zhi-Yong
Food and Machinery
In this study, barley germination test was carried out in an apparatus that could simulate low-dose X ray environment, and the quality parameters of barley were detected to analyze the relationship between the radiation dose received by barley seeds and the germination process of barley. The study found that the X ray of barley seed germination stage of bud length, root length and biomass to produce inhibition, accept the dose of 1 059.65 μSv/s experimental Ⅰ starch, protein and fat in 3 days delay. which compared with the control group increased 19.8%, 31.6% and 33.3%, respectively and the soluble dietary …
The Change Of Volatile Flavor Substances In The Processing Of Continuous Immobilization Of Banana Vinegar,
2021
Guangxi Agricultural Vocational College, Nanning, Guangxi 530007, China
The Change Of Volatile Flavor Substances In The Processing Of Continuous Immobilization Of Banana Vinegar, Wei Lu, Sun Qin-Ju, Yang Chang-Peng, Du Li-Juan, Huang Jie, Ling Min-Min
Food and Machinery
Using banana fruit wine with an alcohol content of 5%~6% as raw material, the banana fruit vinegar is brewed by continuous immobilization fermentation method, and the headspace solid phase microextraction-gas chromatography-mass spectrometry is used to analyze and identify the volatile components in different stages of banana vinegar fermentation, and analyze the dynamic changes of main aroma substances. A total of 79 compounds were isolated in banana vinegar, and the main flavor components of banana vinegar were ethyl acetate, ethyl octanoate, ethyl hexanoate, ethyl decanoate, ethyl phenylacetate, ethanol, isobutanol, phenylethyl alcohol, α-terpineolacetic acid, caproic acid, octanoic acid, 3-hydroxy-2-butanone, furfural, 2-heptanone, furfural, …
Effects Of Temperature And Humidity Control On Physical And Chemical Properties And Flavor Of Fermented Ham,
2021
Delis Group Liminted Company, Weifang, Shandong 2622000, China
Effects Of Temperature And Humidity Control On Physical And Chemical Properties And Flavor Of Fermented Ham, Liu Xin, Piao Chun-Xiang, Li Min, Liu Dong-Min, Li Guan-Hao
Food and Machinery
Using pig hind legs as raw material, ham was fermented under temperature and humidity control conditions. Study the effects of temperature and humidity control technology on the moisture content, pH, color, ash content, salt content, total protein content and other physical and chemical indicators and flavor substances of fermented ham. Results: the moisture content of the ham after temperature and humidity control fermentation was 50.16%, which was significantly higher than that of the control group (P＜0.05); compared with the control group ham, the temperature and humidity control group ham color was brighter and redder; The salt mass fraction of the …
Effect Of Extrusion Process On Different Forms Of Phenolic Compounds And Antioxidant Activities Of Hulless Barley,
2021
College of Life Science, Sichuan Normal University, Chengdu, Sichuan 610101, China
Effect Of Extrusion Process On Different Forms Of Phenolic Compounds And Antioxidant Activities Of Hulless Barley, He Yang-Hang, Liu Gang, Xia Chen, Deng Jun-Lin, Lin Chang-Bin, Xiang Zhuo-Ya, Chen Jian, Zhang Wen-Hui
Food and Machinery
This study was aimed at determining the contents of different forms of polyphenols and antioxidant activities of hulless barley. The contents and types of polyphenols were detected by Folin-ciocalteu and HPLC, respectively. The antioxidant activity was investigated by testing the scavenging ability of DPPH radicals. Results showed that the free, bind and total phenolic content of hulless barley decreased respectively by 89.3%, 23.7% and 52.7%, and esterified polyphenols slightly increased by 2.49 mg/100 g after processing. The variety of polyphenols segregated from free polyphenol extracts increased three. Besides, 7 phenolic compounds were all tested in bind polyphenols. Ferulic acid had …
Comparison On The Drying And Shrinkage Characteristic Of Different Size Tobacco Strips By A Cylinder Dryer,
2021
Technology Center of China Tobacco Henan Industry Co., Ltd., Zhengzhou, Henan 450000, China
Comparison On The Drying And Shrinkage Characteristic Of Different Size Tobacco Strips By A Cylinder Dryer, Duan Kun, Han Li-Feng, Zhao Ya-Heng, Liu Huan, Liu Kai-Li
Food and Machinery
In order to study the drying and shrinkage characteristic of different size tobacco strips during cylinder dryer, redrying experiments of three kinds of tobacco leaves were performed in a lab-scale rotary dryer. The results showed that that the size of tobacco trips had no significant influence on the drying rate and temperature of dried materials. For the tobacco strips with the size more than screen mesh 25.40 mm and the trips with size between screen mesh 12.70 to 25.40 mm, the percentage of samples with the size of 225~625 mm2 significantly increased after cylinder redrying. For the tobacco strips …
Subcellular Distribution And Risk Assessment Of Aluminum In Seaweed And Tea,
2021
Hubei Provincial Institute for Food Supervision and Test, Wuhan, Hubei 430075, China
Subcellular Distribution And Risk Assessment Of Aluminum In Seaweed And Tea, Song Zheng, Ma Li-Xia, Peng Qing-Zhi, Huang Hui, Cheng Yin-Qi
Food and Machinery
The subcellular distribution of aluminium in seaweed and tea leaves was analyzed by differential centrifugation with microwave digestion and inductively coupled plasma mass spectrometer. The results showed that the proportion of aluminium in cell wall, organelle and cytoplasm of tea leaves were 78.4%, 11.2% and 9.5%, respectively; the proportion of aluminium in cell wall, organelle and cytoplasm of seaweed were 91.60%, 6.95% and 1.33%, respectively. Using transmission electron microscope with energy dispersive spectroscopy, surface scanning analysis was carried out on the distribution of aluminum in the single cell of tea leaves and seaweed, intuitively revealing that aluminum was mainly distributed …
Simultaneous Determination Of Four Flavonoid Glycosides And Limonin In Pomelo By Hplc,
2021
Food Science and Engineering, Jinan University, Guangzhou, Guangdong 510632, China
Simultaneous Determination Of Four Flavonoid Glycosides And Limonin In Pomelo By Hplc, Zhang Shan, Huang Xue-Song
Food and Machinery
In order to simultaneously determine narirutin, naringin, hesperidin, neohesperidin and limonin in pomelo, the effects of elution conditions and measurement wavelength of high-pressure liquid chromatography on the determination results were studied. The results showed that the optimal measurement conditions were as follows. Chromatographic column of Bio-Bond 5 μm C18 (4.6 mm × 250 mm was used, and the injection volume was 10 μL; the detection wavelengths of flavonoid glycosides and limonin were 283 nm and 220 nm, respectively; The phase: included acetonitrile (A) and water (B) with gradient elution of 0 min, 22% A, 8 min, 22% A, 10 …
Research On Simulation Of Flow Field In Press Section Of Screw Press Based On Fluent,
2021
School of Artificial Intelligence, Beijing Technology and Business University, Beijing 100048, China; Plastic Beijing Municipal Key Laboratory of Health and Safety Quality Evaluation Technology, Beijing 100048, China
Research On Simulation Of Flow Field In Press Section Of Screw Press Based On Fluent, Mi Guo-Qiang, Huang Zhi-Gang, Hu Shu-Zhen, An Qi, Li He
Food and Machinery
In order to study the flow field distribution and variation law of the interaction between oil and screw in the chamber of a twin screw press, a physical model of the screw press and the fluid field was established. Fluent is used to solve the finite element simulation. The distributions of pressure field and velocity field and concentration field of oil in the press section were obtained. In the certain scope, the pressure and temperature were higher, and the concentration was higher, which was beneficial to get high oil yield.
Research On Control System Technology Of A Kind Of Vision Industrial Point Halogen Robot,
2021
School of Mechanical and Electrical Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411100, China
Research On Control System Technology Of A Kind Of Vision Industrial Point Halogen Robot, Hunag Liang-Pei, Liu Yang, Shu Yong
Food and Machinery
Aiming at the problems of low positioning accuracy and low efficiency in the process of point brine, machine vision was introduced into the betel nut brine system, and a betel nut brine system was developed which combined machine vision and motion control. The system mainly obtains the center positions of betel nuts of different shapes through visual positioning, and transmits the positioning results to the motion controller, and then uses kinematics to calculate the motion trajectory of the point halogen, and realizes the precise positioning and automatic point halogen of the point halogen.
