ENHANCED METHOD FOR AMPLIFYING ANTIMICROBIAL ACTIVITY OF LACTOPEROXIDASE SYSTEM IN MILK AND DERIVED PRODUCTS BY CARROT EXTRACT AND BETA CAROTENE

OSCN–  has  been  known  and  well  documented  as  natural  antimicrobial  agent    generated  from the  lactoperoxidase  system (LPOS)  but  the  antimicrobial  activity  exerted  from  this  system  is  too  low  for  certain  food  such  as  milk  and  derived products (up to 1.2 log CFU/ml) resulting in the restriction on industrial  development  of  LPOS.  Our  previous  study  concluded  that  involvement  of  carrot  extract and beta carotene in LPOS significantly boosted the antimicrobial activity  (up  to  6  log  CFU/ml)  against  S.  enteritidis.  This  finding  should  be  continued  to  the  application  on  food.  Since  we  found  that  LPOS  generates  low  antimicrobial  activity  on  milk  and  derived  product,  our  research  will  be  conducted  on  the  application  of  LPOS  plus  carrot  extract  and  beta  carotene  on  milk  and  derived  product.  Because  the  high  antimicrobial  activity  is  needed  for  industrial  purposes,  this  research  may  open  the  way  for  industrial  development  of  natural  antimicrobial agent from LPOS.  This research will be conducted in three steps of experiment: (1) ensuring  the  incredible  antimicrobial  activity  of  LPOS  plus  carrot  extract  and  beta  carotene  against  three  poisonous  tropical bacteria:  C. jejuni,  S. enteritidis,  and E.  coli,  (2)  utilization  of  LPOS  plus  carrot  extract  and  beta  carotene  in  milk:  full  cream and skimmed milk, and (3) utilization of LPOS plus carrot extract and beta  carotene  in  milk  derived  product:  yogurt  and  tropical  fruity  milk.  The  purification  of  LPO  from  bovine  milk,  the  complimentary  data  analysis  for  generation  of  LPOS  antimicrobial  activity  by  the  addition  of  carrot  extract  and  beta  carotene  will  be  conducted  in  Japan  and  for  the  application  in  tropical  poisonous  bacteria,  milk,  and  milk  derived  product  will  be  conducted  in  Indonesia.  The  outcomes  of  this  research  from  three  step  of  research  are  three  international  publications  at  international‐scopus‐indexed‐journals  :  International Journal of  Dairy Science and  one  of  patent:  “enhanced  method  for  improvement of LPOS antimicrobial activity by involvement of carrot extract and  beta carotene in milk and derived product”.     Keywords:  Lactoperoxidase,  antimicrobial  activity,  carrot  extract,  beta  carotene,  milk, derived products

Writing Electronic Devices on Paper with Carbon Nanotube Ink

The normal paper used in any printer is among the cheapest flexible organic materials that exist. We demonstrate that we can print on paper high-frequency circuits tunable with an applied dc voltage. This is possible with the help of an ink containing functionalized carbon nanotubes and water. After the water is evaporated from the paper, the nanotubes remain steadily imprinted on paper, showing a semiconducting behaviour and tunable electrical properties

End User Adoption of ERP Systems: Investigation of Four Beliefs

This paper studies the effects of four beliefs of a group of end users on the adoption of ERP systems. The beliefs examined were perceived usefulness, ease of use, expected capability, and expected value. A sample of 58 SAP users was collected, via online survey, from a large company in Saudi Arabia. The validity and the reliability of the data collection instrument were tested using the exploratory factor analysis and Cronbach\u27s Alpha coefficients, respectively. Using multiple regression analysis, the perceived ease of use and the expected value of ERP system was found to have a significant direct effect on the acceptance of ERP system. However, the perceived usefulness and expected capability did not have a direct significant effect on acceptance of ERP systems. The study provides insights for organizations implementing ERP systems in developing countries

High-Order Hybrid Stratified Sampling: Fast Uniform-Convergence Fourier Transform Estimation

This paper considers the problem of estimating the Fourier transform of continuous-time signals from N nonuniformly collected observations. Here, we introduce a new class of Hybrid Stratified sampling scheme in conjunction with a suitable estimator, which can provide the rate of convergence of order \u1d7cf/\u1d475(\u1d7d0\u1d472+\u1d7d1) in the mean-square sense, for signals with \u1d472+\u1d7cf continuous derivatives. Most importantly, it is shown that this rate is not only faster, but also uniform and independent of the analysed frequency (unlike) compared with other existing random-sampling-based techniques. In this paper, we establish the statistical properties of the proposed approach and illustrate its performance analytically as well as numerically

The Effect of Tourism and the Educational Level of Parents and Students on the Enrollment in the Hotel and Tourism in the Schools of Amman Governorate

This study aims at knowing the tourism impact on both educational level of parents and students on enrollment in  hotel and tourism education. Also, it used a sample which consists of students in the branch of hotel and tourism education in the schools of Amman Governorate. There were employed two methods to collect information and data for attaining the study goals. The first one is utilizing a written questionnaire which was distributed on a sample of 300 students studying hotel education in the first secondary class. The second method was based on collecting data from books, researches and published researches.  Thus, descriptive statistics were exploited to extract the mean and standard deviation of this study. Moreover, the writer used the Kolmogorov -smirnov test to examine the data.The educational level of parents, academics and students in hotels and tourism has been  affected on students who study  hotel and tourism in the secondary stage. This means that the educational level plays a vital role in the proportion of students studying hotel and tourism branch in secondary school (Alhroot, 2018).Therefore, the advices recommend the adoption of the study in hotel and tourism education on the desire of the student and motivate them. Consequently, it will give the opportunity to study at the university as a professional and technical. Thus, in order to create job opportunities for graduate students in hotel and tourism vocational and technical education. Keywords: Tourism, Students, Parents, Educational Level, Enrollment, Hotel, Amman DOI: 10.7176/EJBM/11-26-03 Publication date:September 30th 201