Efficacy of Germicidal Hand Wash Agents in Use in a Meat Processing Plant

1987 ◽  
Vol 50 (4) ◽  
pp. 289-295 ◽  
Author(s):  
M. E. STILES ◽  
A. Z. SHEENA
Keyword(s):  
Laboratory Study ◽  
Chlorhexidine Gluconate ◽  
Hand Washing ◽  
Processing Plant ◽  
Meat Processing ◽  
Active Ingredients ◽  
Controlled Conditions ◽  
Hand Wash ◽  
Significant Difference ◽  
Work Units

The in-use efficacy of a selected range of germicidal hand wash agents was tested in a meat processing plant. The hand washes included non-germicidal soaps and germicidal agents containing chlorhexidine, iodophor and Irgasan DP 300 as active ingredients. A laboratory study was done under controlled conditions with standardized procedures for hand washing; in the meat plant, “normal” (unstandardized) hand wash procedures were followed. Levels of contamination on hands varied markedly between work units. Only in the meat cutting area could a significant difference be attributed to hand wash agents against transient-type bacteria on workers' hands. The hand wash agent with 4% chlorhexidine gluconate, the iodophor with 0.75% available iodine and the gel containing 0.3% Irgasan DP 300 were the only products that gave a significantly better reduction of transient bacteria than non-germicidal soap. Transient bacteria were detected on hands after washing, indicating that under the in-use conditions in the meat processing plant, hand wash techniques did not remove all of these bacteria from hands. The plant workers generally indicated a dislike for the iodophor products as hand germicides.

scholarly journals Pengaruh Sodium Hipoklorit dan Kalsium Hipoklorit terhadap Daya Hidup Leptospira Patogenik

2021 ◽  
Vol 49 (3) ◽  
pp. 175-182
Author(s):  
Arief Nugroho ◽  
Esti Rahardianingtyas ◽  
Rendro Wianto ◽  
Nurhidayati Nurhidayati ◽  
Farida Dwi Handayani
Keyword(s):  
Experimental Design ◽  
Sodium Hypochlorite ◽  
Laboratory Study ◽  
Active Ingredient ◽  
Health Problem ◽  
Active Ingredients ◽  
Calcium Hypochlorite ◽  
Pathogenic Leptospira ◽  
Significant Difference ◽  
Statistical Results

Leptospirosis is still a health problem in the word. Leptospirosis can be transmitted to humans trough contact with environment infected with pathogenic Leptospira. Efforts to control pathogenic Leptospira in the environment can be done one of them by disinfecting. Effective desinfectants for the control of pathogenic Leptospira include the active ingredients Calcium hypochlorite 60% and Sodium hypochlorite 5,25%. This study aims to determine the effectiveness of Calcium hypochlorite 60% and Sodium hypochlorite 5,25% against the life power of pathogenic Leptospira. This research is a laboratory study with pure experimental design. Serovar of pathogenic Leptospira used is Leptospira icterohaemorrhagiae. Leptospira icterohaemorrhagiae desnsity used as much as 5.7 x 106 Leptospira/ml. The concentrations of desinfectans and bacteria are: 5 ppm, 50 ppm, 500 ppm, 1000 ppm, 2000 ppm, 5000 ppm, 10.000 ppm, and 25.000 ppm. Observations are made every ten minutes and twenty minutes with three repeats. The results showed that Leptospira icterohaemorrhagiae could not survive when tested on 60% calcium hypochlorite and 5.25% sodium hypochlorite, respectively, at a concentration of 2000 ppm and a concentration of 1000 ppm. Statistical results showed there was a significant difference in the concentration of each disinfectant active ingredient. Thus, a disinfectans of chlorine with the active ingredient Calcium hypochlorite 60% and Sodium hypochlorite 5,25% effectively affects the viability of the Leptospira icterohaemorrhagiae. Keywords : Sodium Hypochlorite, Calcium Hypochlorite, Leptospira, Disinfectant Abstrak Leptospirosis masih menjadi masalah kesehatan di dunia. Leptospirosis dapat menular ke manusia lewat kontak dengan lingkungan yang mengandung Leptospira patogenik. Upaya pengendalian Leptospira patogenik di lingkungan dapat dilakukan salah satunya dengan pemberian disinfektan. Disinfektan yang efektif untuk pengendalian Leptospira patogenik diantaranya adalah bahan aktif kalsium hipoklorit 60% dan sodium hipoklorit 5,25%. Penelitian ini bertujuan mengetahui efektivitas bahan aktif kalsium hipoklorit 60% dan sodium hipoklorit 5,25% terhadap daya hidup Leptospira patogenik. Penelitian ini merupakan penelitian skala laboratorium dengan rancangan eksperimental murni. Serovar Leptospira patogenik yang digunakan adalah Leptospira icterohaemorrhagiae. Kepadatan Leptospira icterohaemorrhagiae yang digunakan sebanyak 5,7 x 106 Leptospira/ml. Konsentrasi campuran disinfektan dan bakteri yaitu: 5 ppm, 50 ppm, 500 ppm, 1000 ppm, 2000 ppm, 5000 ppm, 10.000 ppm, dan 25.000 ppm. Pengamatan dilakukan tiap 10 menit dan 20 menit dengan tiga kali ulangan. Hasil penelitian menunjukkan Leptospira icterohaemorrhagiae tidak dapat hidup saat diujikan ke kalsium hipoklorit 60% dan sodium hipoklorit 5,25% berturut-turut pada konsentrasi 2000 ppm dan konsentrasi 1000 ppm. Hasil statistik menunjukkan ada perbedaan signifikan dari besaran konsentrasi masing-masing bahan aktif disinfektan. Dengan demikian, disinfektan klorin dengan bahan aktif calcium hypochlorite 60% dan sodium hypochlorite 5,25% efektif memengaruhi daya hidup Leptospira icterohaemorrhagiae. Kata kunci: Sodium hipoklorit, Kalsium hipoklorit, Leptospira, Disinfektan

Quantifying the Effect of Hand Wash Duration, Soap Use, Ground Beef Debris, and Drying Methods on the Removal of Enterobacter aerogenes on Hands

2015 ◽  
Vol 78 (4) ◽  
pp. 685-690 ◽  
Author(s):  
DANE A. JENSEN ◽  
MICHELLE D. DANYLUK ◽  
LINDA J. HARRIS ◽  
DONALD W. SCHAFFNER
Keyword(s):  
Disease Transmission ◽  
Ground Beef ◽  
Enterobacter Aerogenes ◽  
Hand Washing ◽  
Drying Methods ◽  
Microbial Risk ◽  
Paper Towel ◽  
Hand Wash ◽  
Significant Difference ◽  
Food Workers

Hand washing is recognized as a crucial step in preventing foodborne disease transmission by mitigating cross-contamination among hands, surfaces, and foods. This research was undertaken to establish the importance of several keys factors (soap, soil, time, and drying method) in reducing microorganisms during hand washing. A nonpathogenic nalidixic acid–resistant Enterobacter aerogenes surrogate for Salmonella was used to assess the efficacy of using soap or no soap for 5 or 20 s on hands with or without ground beef debris and drying with paper towel or air. Each experiment consisted of 20 replicates, each from a different individual with ~6 log CFU/ml E. aerogenes on their hands. A reduction of 1.0 ± 0.4 and 1.7 ± 0.8 log CFU of E. aerogenes was observed for a 5-s wash with no soap and a 20-s wash with soap, respectively. When there was no debris on the hands, there was no significant difference between washing with and without soap for 20 s (P > 0.05). Likewise, there was no significant difference in the reductions achieved when washing without soap, whether or not debris was on the hands (P > 0.05). A significantly greater reduction (P < 0.05) in E. aerogenes (0.5 log CFU greater reduction) was observed with soap when there was ground beef debris on the hands. The greatest difference (1.1 log CFU greater average reduction) in effectiveness occurred when ground beef debris was on the hands and a 20-s wash with water was compared with a 20-s wash with soap. Significantly greater (P < 0.05) reductions were observed with paper towel drying compared with air (0.5 log CFU greater reductions). Used paper towels may contain high bacterial levels (>4.0 log CFU per towel) when hands are highly contaminated. Our results support future quantitative microbial risk assessments needed to effectively manage risks of foodborne illness in which food workers' hands are a primary cause.

scholarly journals Optimization of Evaluation Method for Hand Washing and Hand Washing Method in the Meat Processing Plant

2014 ◽  
Vol 31 (2) ◽  
pp. 100-107
Author(s):  
Nobuhiro KOKUBUN ◽  
Kouichirou KUNITAKE ◽  
Takahito OKUSHIBA ◽  
Junichi MATSUURA ◽  
Hiroshi MURAKAMI ◽  
...  
Keyword(s):  
Evaluation Method ◽  
Hand Washing ◽  
Processing Plant ◽  
Meat Processing ◽  
Washing Method

scholarly journals Sleep Deprivation and Sleep-Onset Insomnia are Associated with Blunted Physiological Reactivity to Stressors

2021 ◽  
Vol 186 (Supplement_1) ◽  
pp. 246-252
Author(s):  
Devon A Hansen ◽  
Brieann C Satterfield ◽  
Matthew E Layton ◽  
Hans P A Van Dongen
Keyword(s):  
Sleep Deprivation ◽  
Laboratory Study ◽  
Salivary Cortisol ◽  
Sleep Onset ◽  
Deprivation Condition ◽  
Increased Risk ◽  
Significant Difference ◽  
Sleep Deficiency ◽  
The Impact ◽  
Chronic Sleep

ABSTRACT Introduction Military operations often involve intense exposure to stressors combined with acute sleep deprivation, while military personnel also experience high prevalence of chronic sleep deficiency from insomnia and other sleep disorders. However, the impact of acute and chronic sleep deficiency on physiologic stressor responses is poorly understood. In a controlled laboratory study with normal sleepers and individuals with chronic sleep-onset insomnia, we measured responses to an acute stressor administered in a sleep deprivation condition or a control condition. Methods Twenty-two adults (aged 22-40 years; 16 females)—11 healthy normal sleepers and 11 individuals with sleep-onset insomnia—completed a 5-day (4-night) in-laboratory study. After an adaptation day and a baseline day, subjects were assigned to a 38-hour total sleep deprivation (TSD) condition or a control condition; the study ended with a recovery day. At 8:00 PM after 36 hours awake in the sleep deprivation condition or 12 hours awake in the control condition, subjects underwent a Maastricht Acute Stress Test (MAST). Salivary cortisol was measured immediately before the MAST at 8:00 PM, every 15 minutes after the MAST from 8:15 PM until 9:15 PM, and 30 minutes later at 9:45 PM. Baseline salivary cortisol was collected in the evening of the baseline day. Additionally, before and immediately upon completion of the MAST, self-report ratings of affect and pain were collected. Results The MAST elicited a stressor response in both normal sleepers and individuals with sleep-onset insomnia, regardless of the condition, as evidenced by increases in negative affect and pain ratings. Relative to baseline, cortisol levels increased immediately following the MAST, peaked 30 minutes later, and then gradually returned to pre-MAST levels. At the cortisol peak, there was a significant difference across groups and conditions, reflecting a pronounced blunting of the cortisol response in the normal sleepers in the TSD condition and the sleep-onset insomnia group in both the TSD and control conditions. Conclusions Blunted stressor reactivity as a result of sleep deficiency, whether acute or chronic, may reflect reduced resiliency attributable to allostatic load and may put warfighters at increased risk in high-stakes, rapid response scenarios.

ANTIBACTERIAL EFFECTIVENESS OF ROUTINE HAND WASHING

PEDIATRICS ◽  
1973 ◽  
Vol 52 (2) ◽  
pp. 264-271 ◽  
Author(s):  
Katherine Sprunt ◽  
Winifred Redman ◽  
Grace Leidy
Keyword(s):  
Hand Washing ◽  
Indigenous Bacteria ◽  
Paper Towel ◽  
Test Conditions ◽  
Hand Wash

A broth rinse method was used to determine the indigenous bacteria of the hands of nursery personnel and to demonstrate its stability under the test conditions. The efficacy of five wash agents in removing infant-acquired organisms from the hands was then explored. All agents were equally effective including water when followed by drying on a paper towel. The data show that the routine-type quick hand wash usually employed by busy aides and nurses is effective in removing patient-acquired organisms and provide additional emphasis on the importance of the hand wash procedure in prevention of spread of bacteria from patient to patient.

scholarly journals The Effect of Modified Atmospheric Packaging on Beef Color Sensory Characteristics of Different Muscle pH Categories

2019 ◽  
Vol 3 (2) ◽  
Author(s):  
A. Cassens ◽  
G. Mafi ◽  
D. VanOverbeke ◽  
R. Ramanathan
Keyword(s):  
Modified Atmosphere Packaging ◽  
Processing Plant ◽  
High Ph ◽  
Beef Processing ◽  
Modified Atmospheric Packaging ◽  
Significant Difference ◽  
Muscle Ph ◽  
Beef Steaks ◽  
Retail Display ◽  
Muscle Color

ObjectivesAny deviation from the bright-red color of beef can lead to discounted price or consumer rejection. Fresh beef lean color is influenced by pH. Various packaging techniques have been developed to enhance the lean color of beef steaks. Therefore, the objective of the current study was to evaluate the effects of modified atmospheric packaging on three different beef muscle pH categories.Materials and MethodsThe three categories evaluated for this study were: Normal (pH = 5.57 ± 0.1; N-pH), Moderately high (pH = 5.70 ± 0.09; M-pH), and High (pH = 6.39 ± 0.03; H-pH). The pH was taken on the carcass, at the 12th and 13th rib interface within 72 h of harvest at a commercial beef processing plant. Strip loins were fabricated from each carcass (n = 12) and sent to Oklahoma State University for further analysis. Strip loins were then cut into 2.54 cm steaks and randomly assigned to 1 of 3 packaging treatments: polyvinyl chloride overwrap (PVC), carbon monoxide modified atmosphere packaging (CO-MAP; 0.4% CO, 69.6% N, and 30% CO2) and high-oxygen modified atmospheric packaging (HiOx-MAP; 80% O2, and 20% CO2). Visual color measurements for muscle color (MC; (1 = extremely bright cherry-red and 7 = extremely dark red), and surface discoloration (SD; 1 = no discoloration [0%] and 7 = extensive discoloration [81–100%]) were recorded on d 2, 4, and 6 of retail display by a trained panel. Data were analyzed using the Mixed Procedure of SAS.ResultsFor all pH treatments, PVC packaging possessed the darkest muscle color (P < 0.05) score compared to CO- and HiOx-MAP. When comparing N-pH, M-pH, and H-pH values, CO-MAP had approximately a 27.3%, 22.2%, and 25.3% improvement in muscle color, indicating a brighter lean color compared to PVC. Additionally, HiOx-MAP had approximately a 10.9%, 17.4%, and 16.5% improvement in muscle color score for N-pH, M-pH, and H-pH, respectively. When packaging steaks in either CO- or HiOx-MAP there was no significant difference (P > 0.05) between d 4 and 6 of retail display for muscle color. However, there was a significant (P < 0.05) darkening in muscle color for steaks packaged in PVC from d 4 to 6 of retail display. By the fourth d of retail, N-pH steaks packaged in PVC had 38.3% and 39.0% greater (P < 0.05) surface discoloration than CO- and HiOx-MAP, respectively.ConclusionThese results suggest that packaging steaks of different pH categories in CO- or HiOx-MAP can improve the surface color compared to PVC packaging.

scholarly journals 10% povidone-iodine versus 2% chlorhexidine gluconate for Periurethral cleansing before catheterization among hospitalized patients: A randomized controlled trial

2019 ◽  
Author(s):  
elham vahabi ◽  
somayeh ghafari ◽  
somayeh haghighat
Keyword(s):  
Randomized Controlled Trial ◽  
Povidone Iodine ◽  
Controlled Trial ◽  
Chlorhexidine Gluconate ◽  
Hospitalized Patients ◽  
Time Intervals ◽  
Randomized Controlled ◽  
Significant Difference ◽  
Tract Infections ◽  
Urine Specimens

Abstract Background There are evidences that periurethral cleaning by antiseptics before catheterization decreases the risk of urinary tract infections. The purpose of this study was to Comparing 10% povidone-iodine and chlorhexidine gluconate (CHG) effectiveness in periurethral cleaning before catheterization on bacteriuria and pyuria in hospitalized patients. Methods A randomized controlled trial was used, and subjects were randomly allocated to either the 10% povidone -iodine group or the 2% chlorhexidine gluconate group. Urine specimens for culture and Analyse were collected 3 times for each subject within 5 days. Results Overall, 216 urine samples were collected in 72 subjects .There were no significant difference in results of bacteriuria of two groups immediately, 72 hrs. and 5 days after catheterization (p>0.05). There was no significant difference between two groups regarding positive pyuria immediately after sampling (p>0.05). Although its amount was significantly higher 72 hrs and 5days after catheterization in 10% povidone-iodine group than 2% chlorhexidine gluconate (p<0.05). In order to evaluate average of micro-organism in different time intervals between two groups Mann– Whitney test was used. This test showed that there was no significant difference of number of time intervals (p>0.05). Conclusions The results of this study showed that using 2% chlorhexidine gluconate reduced the amount of bacteriuria in catheterazied patients compared to 10% povidone-iodine. However this difference was not significant. Therefore doing more studies with more number of samples in this field is suggested. Trial registration: Retrospectively registered. IRCT20170712035044N2 Key words: 10% povidone-iodine- 2% chlorhexidine gluconate - Bacteriuria- Periurethral cleansing

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