scholarly journals Optical Barrier for Microbiological Control after a Sterilization Process

2017 ◽  
Vol 7 (2) ◽  
pp. 135-137
Author(s):  
Bruno Pereira de Oliveira ◽  
◽  
Kate Cristina Blanco ◽  
Javier A. Jurado ◽  
Vanderlei Salvador Bagnato ◽  
...  
Keyword(s):  
Optical Barrier ◽  
Microbiological Control ◽  
Sterilization Process

scholarly journals Low-Density Polyethylene Films Carrying ferula asafoetida Extract for Active Food Packaging: Thermal, Mechanical, Optical, Barrier, and Antifungal Properties

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Razieh Niazmand ◽  
Bibi Marzieh Razavizadeh ◽  
Farzaneh Sabbagh
Keyword(s):  
Polymer Matrix ◽  
Food Packaging ◽  
Barrier Properties ◽  
Low Density Polyethylene ◽  
Low Density ◽  
Optical Barrier ◽  
Leaf Extracts ◽  
Polyethylene Films ◽  
Active Food Packaging ◽  
Ferula Asafoetida

The physical, thermal, mechanical, optical, microstructural, and barrier properties of low-density polyethylene films (LDPE) containing ferula asafoetida leaf and gum extracts were investigated. Results showed a reduction in elasticity and tensile strength with increasing extract concentration in the polymer matrix. The melting temperature and enthalpy increased with increasing concentration of extracts. The films containing extracts had lower L∗ and a∗ and higher b∗ indices. The films containing leaf extract had more barrier potential to UV than the gum extracts. The oxygen permeability in films containing 5% of leaf and gum extracts increased by 2.3 and 2.1 times, respectively. The morphology of the active films was similar to bubble swollen islands, which was more pronounced at higher concentrations of gum and leaf extracts. FTIR results confirmed some chemical interactions of ferula extracts with the polymer matrix. At the end of day 14th, the growth rate of Aspergillus niger and Saccharomyces cerevisea in the presence of the PE-Gum-5 reduced more than PE-Leaf-5 (3.7 and 2.4 logarithmic cycles, respectively) compared to the first day. Our findings showed that active LDPE films have desire thermo-mechanical and barrier properties for food packaging.

scholarly journals Optimized genotyping method for identification of bacterial contaminants in pharmaceutical industry

2016 ◽  
Vol 66 (2) ◽  
pp. 289-295
Author(s):  
Borche Stamatoski ◽  
Miroslava Ilievska ◽  
Hristina Babunovska ◽  
Nikola Sekulovski ◽  
Sasho Panov
Keyword(s):  
Pharmaceutical Industry ◽  
Dna Sequencing ◽  
Bacterial Contamination ◽  
Raw Materials ◽  
Pcr Primers ◽  
Rrna Gene ◽  
Bacterial Identification ◽  
Bacterial Contaminants ◽  
Microbiological Control ◽  
Selection Of

AbstractMicrobiological control is of crucial importance in the pharmaceutical industry regarding the possible bacterial contamination of the environment, water, raw materials and finished products. Molecular identification of bacterial contaminants based on DNA sequencing of the hypervariable 16SrRNA gene has been introduced recently. The aim of this study is to investigate the suitability of gene sequencing using our selection of PCR primers and conditions for rapid and accurate bacterial identification in pharmaceutical industry quality control.DNA was extracted from overnight incubated colonies from 10 bacterial ATCC strains, which are common contaminants in the pharmaceutical industry. A region of bacterial 16SrRNA gene was analyzed by bidirectional DNA sequencing. Bacterial identification based on partial sequencing of the 16SrRNA gene is the appropriate method that could be used in the pharmaceutical industry after adequate validations. We have successfully identified all tested bacteria with more than 99 % similarity to the already published sequences.

Physicomechanical, optical, barrier, and WAXS studies of filled linear low-density polyethylene films

2003 ◽  
Vol 90 (11) ◽  
pp. 2938-2944 ◽  
Author(s):  
Siddaramaiah ◽  
T. Jeevananda ◽  
K. S. Jagadeesh ◽  
H. Somashekarappa ◽  
R. Somashekar
Keyword(s):  
Low Density Polyethylene ◽  
Low Density ◽  
Linear Low Density Polyethylene ◽  
Optical Barrier ◽  
Polyethylene Films

SUBSTANTIATION OF OPTIMAL PARAMETERS AND DEVELOPMENT OF HIGH-TEMPERATURE STERILIZATION MODES FOR COMPOTE FROM PEARS IN HEATED AIR FLOW

2020 ◽  
Author(s):  
М.Э. Ахмедов ◽  
А.Ф. Демирова ◽  
Г.И. Касьянов ◽  
Ю.Ф. Росляков ◽  
М.М. Рахманова
Keyword(s):  
Mathematical Model ◽  
High Temperature ◽  
High Speed ◽  
Heat Transfer Fluid ◽  
Initial Product ◽  
Hot Air ◽  
Heated Air ◽  
Sterilization Process ◽  
Thermal Sterilization ◽  
Heat Carriers

Разработаны новые режимы стерилизации компота из груш в стеклотаре СКО 1-82-1000 с использованием высокотемпературных скоростных теплоносителей. Получена математическая модель расчета продолжительности процесса стерилизации в зависимости от параметров теплоносителя. Для получения математической модели использован метод математического планирования эксперимента. Предложен технологический прием ускоренной стерилизации компота из груш в стеклобанке объемом 1 дм3. Разработаны новые режимы тепловой обработки (стерилизации) компота из груш в стеклобанке 1-82-1000 при различных параметрах горячего воздуха и разных начальных температурах продукта, °С: 70, 80, 85 и 90. Наименьшая продолжительность процесса тепловой стерилизации достигнута при скорости теплоносителя 7,5 м/с при начальной температуре продукта 90°С. New modes of sterilization of compote from pears in glass containers of SKO 1-82-1000 using high-temperature high-speed heat carriers have been developed. A mathematical model for calculating the duration of the sterilization process depending on the parameters of the heat carrier is obtained. To obtain a mathematical model, we used the method of mathematical planning of the experiment. A technological method for accelerated sterilization of pear compote in a glass jar with a volume of 1 dm3 is proposed. The research made it possible to develop new modes of heat treatment (sterilization) of compote from pears in a glass jar 1-82-1000 at different parameters of hot air and different initial temperatures of the product, °C: 70, 80, 85 and 90. The shortest duration of the thermal sterilization process is achieved at the heat transfer fluid speed of 7,5 m/s at the initial product temperature of 90°C.

QUANTIFICATION OF THE HORIZONTAL STERILIZATION CYCLE GRAPHIC OF PALM OIL AND ITS RELATIONSHIP TO OIL LOSSES IN EMPTY BUNCH AND CONDENSATE

2021 ◽  
Vol 2 (2) ◽  
pp. 58-65
Author(s):  
Heri Purwanto
Keyword(s):  
Palm Oil ◽  
Performance Parameters ◽  
Closed Vessel ◽  
Sterilization Process ◽  
Palm Oil Mill

Sterilization process is one of the keys to success in a Palm Oil Mill. In conventional palm oil mills that use horizontal serilization, the fruit is heated in a closed vessel using pressurized steam at a pressure of 40 psi and a temperature of 140oC. The performance parameters that determine the success of the process in intermediate sterilization are pressure, temperature and time as well as steam requirements. This study aims to determine the correlation between the area under sterilization graph represent the measurement of time and pressure from every cycle of sterilization to oil losses in the condensate and empty bunch. The results show that the higher the sterilization graph area which represents pressure and time, the higher the percentage of oil losses in condensate water and the lower the oil losses in empty bunches.

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