scholarly journals A preliminary Ames fluctuation assay assessment of the genotoxicity of drinking water that has been solar disinfected in polyethylene terephthalate (PET) bottles

2010 ◽  
Vol 8 (4) ◽  
pp. 712-719 ◽  
Author(s):  
Eunice Ubomba-Jaswa ◽  
Pilar Fernández-Ibáñez ◽  
Kevin G. McGuigan
Keyword(s):  
Drinking Water ◽  
Polyethylene Terephthalate ◽  
Room Temperature ◽  
Pet Bottles ◽  
Fluctuation Test ◽  
Solar Exposure ◽  
Genotoxic Compounds ◽  
Ames Fluctuation Test ◽  
Temperature Storage

Though microbially safe, concerns have been raised about the genotoxic/mutagenic quality of solar-disinfected drinking water, which might be compromised as a result of photodegradation of polyethylene terephthalate (PET) bottles used as SODIS reactors. This study assessed genotoxic risk associated with the possible release of genotoxic compounds into water from PET bottles during SODIS, using the Ames fluctuation test. Negative genotoxicity results were obtained for water samples that had been in PET bottles and exposed to normal SODIS conditions (strong natural sunlight) over 6 months. Under SODIS conditions, bottles were exposed to 6 h of sunlight, followed by overnight room temperature storage. They were then emptied and refilled the following day and exposed to sunlight again. Genotoxicity was detected after 2 months in water stored in PET bottles and exposed continuously (without refilling) to sunlight for a period ranging from 1 to 6 months. However, similar genotoxicity results were also observed for the dark control (without refill) samples at the same time-point and in no other samples after that time; therefore it is unlikely that this genotoxicity event is related to solar exposure.

scholarly journals The quality properties, thiobarbituric acid (TBA) values and microstructure of chicken sausage with local red beetroot powder

Food Research ◽  
2021 ◽  
Vol 5 (S2) ◽  
pp. 113-119
Author(s):  
W. Swastike ◽  
E. Suryanto ◽  
Rusman ◽  
C. Hanim ◽  
Jamhari ◽  
...  
Keyword(s):  
Peroxide Value ◽  
Room Temperature ◽  
Thiobarbituric Acid ◽  
Quality Properties ◽  
Randomized Design ◽  
Powder Addition ◽  
Completely Randomized Design ◽  
Different Levels ◽  
Temperature Storage

This research was aimed to determine the quality properties, the microstructure of chicken sausage and Thiobarbituric acid (TBA) values with locally Indonesia red beetroot powder. The main ingredients of chicken sausage-making in this research were broiler chicken, filler, binder, beetroot powder, and spices. Red beetroot powder function as a filler was substituted tapioca starch in chicken sausage batter in three different levels. The combination of red beetroot powder with level 0, 1.0, 2.0 and 3.0% of total batter and shelf life at room temperature for 0, 1, 2 and 3 days. Each treatment consisted of five replications. The variables observed using quality properties (moisture, ash, fat, protein, crude fiber and calorie), microstructure and peroxide value of chicken sausage. The data of quality properties and peroxide value were analyzed by using one-way analysis (ANOVA) of Completely Randomized Design. The differences between means were analyzed by Duncan's New Multiple Ranges Test. The data of microstructure was analyzed by descriptive analyses. The moisture, protein, fat and ash contents for chicken sausages were significantly different (p<0.05). The chicken sausage with 2% substitution of beet powder produced chicken sausages with a high protein content of 14.77±0.02% while a low-fat content is 0.42±0.01%. Thiobarbituric acid (TBA) values of chicken sausages increased throughout the three days of room temperature storage (38°C). Chicken sausage formulated with red beetroot powder showed a significantly lower TBA value compared to the samples without red beetroot powder (p<0.05). In conclusion, a higher level of beetroot powder will improve the quality of chicken sausage and also the microstructure. The best level of beetroot powder addition was 2.0%. The addition of beetroot powder able to maintain fresh sausage conditions up to 2 days of storage at room temperature.

scholarly journals Evaluasi Penyimpanan Spermatozoa Ayam Pada Suhu 5⁰C, 26⁰C Dengan Pengencer Infuse NaCl, Glukosa 5% dan 10%

2021 ◽  
pp. 10-19
Author(s):  
Asnawi Asnawi ◽  
Maskur Maskur ◽  
Adji Santoso Dradjat
Keyword(s):  
Cold Storage ◽  
Room Temperature ◽  
Storage Temperature ◽  
Room Temperature Storage ◽  
C Storage ◽  
Better Than ◽  
Temperature Storage

The purpose of this study were to compare the quality of spermatozoa stored at 26⁰C, 5⁰C using diluents of NaCl, 10% glucose and 5% glucose. The spermatozoa of a rooster was collected and divided into 6 parts, each 2 tubes diluted in a ratio of 1:1 using NaCl, Glucose5% and Glucose 10%, then each 3 tubes with different diluents were stored at 26⁰C and 5⁰C. Observations of motility, viability and abnormalities of spermatozoa were carried out half an hour, 1 hour after dilution, followed every 2 hours until the ninth hours. The results showed that spermatozoa stored for 9 hours at a temperature of 26⁰C with a physiological diluent of NaCl, 10% Glucose and 5% Glucose each were different (P, < 0.05) with motility 50 ± 0.0%, 42 ± 10.95. % and 34±8.94%, respectively. At storage temperature of 5⁰C for 9 hours, physiological NaCl, 10% glucose and 5% glucose were significantly different (P<0.05) with motility 58.00±10.95%, 46.00±8.94% and 38.00±, respectively. 10.95% in a row. The viability of spermatozoa at 26⁰C storage with 5% glucose diluent was better than 10% glucose and physiological NaCl (P<0.05), 58.93±1.27%, 42.93±1.48% and 33.43±1.27% , while the physiological NaCl diluent and 10% glucose were not significantly different (P>0.05). At 5⁰C storage the viability of spermatozoa in the three diluents was not significantly different, with values of Glucose 10%, Glucose 5% and physiological NaCl 52.57±5.15%, 52.21±5.02% and 48.14±8.09%, respectively. Spermatozoa abnormalities at storage temperature 26⁰C and 5⁰C for 9 hours using physiological NaCl diluent, 5% glucose and 10% glucose, were not significantly different and varied between 5 to 10%. Finally, it can be concluded that at room temperature storage less than 4 hours the quality of spermatozoa was better with 5% glucose diluent, while for cold storage beyond 4 hours the quality of spermatozoa with NaCl diluent was higher

scholarly journals Effect of Leaf Extract (Jatropha curcas L.) Towards the Microbiolagic Quality of Layang Fish TPC (Decapterus sp.) At Room Temperature Storage

2021 ◽  
Vol 12 (4) ◽  
pp. 467-472
Author(s):  
Rahim Husain, Et. al.
Keyword(s):  
Jatropha Curcas ◽  
Leaf Extract ◽  
Room Temperature ◽  
Room Temperature Storage ◽  
Main Research ◽  
Jatropha Curcas L ◽  
Preliminary Research ◽  
Hedonic Quality ◽  
Temperature Storage

This study aims to determine the effect of Jatropha Curcas L. leaf extract on the freshness quality of Layang Fish (Decapterus sp.) At room temperature storage. The research consisted of two stages, namely preliminary research and main research. Preliminary research is determining the concentration of castor leaves. The main research is the concentration of Jatropha leaves used, which is 16% with a storage time of 10 hours, 14 hours, 18 hours and 22 hours. The test was carried out organoleptically (hedonic quality) and TPC. This design uses kruskall wallis for organoleptic data (hedonic quality), CRD to obtain TPC results. Organoleptic data and TPC that had a significant effect were tested by Duncan's continued test. The results showed that the fresh fly fish preserved with 16% castor leaf extract was able to maintain the quality of the fresh fly fish for 14 hours of storage. The chemical test results showed that the fresh fly fish with 16% castor leaf extract in 14 hours of storage, the microbiological quality obtained ALT value of 5.03 CFU / g, this fulfills SNI 2729.2013 concerning fresh fish.

Effect of preservatives on microbial safety and quality of smoked blue catfish (Ictalurus furcatus) steaks during room-temperature storage

2008 ◽  
Vol 25 (8) ◽  
pp. 958-963 ◽  
Author(s):  
L ANTONIADASILVA ◽  
W PRINYAWIWATKUL ◽  
J KING ◽  
H NO ◽  
J BANKSTONJR ◽  
...  
Keyword(s):  
Room Temperature ◽  
Ictalurus Furcatus ◽  
Microbial Safety ◽  
Blue Catfish ◽  
Room Temperature Storage ◽  
Temperature Storage

scholarly journals Effect of Packaging Materials on Storage Quality of Functional Beverage Mix

2021 ◽  
Vol 108 (March) ◽  
pp. 1-6
Author(s):  
Girija J ◽  
◽  
Kamalasundari S ◽  
Keyword(s):  
Polyethylene Terephthalate ◽  
Room Temperature ◽  
Finger Millet ◽  
Chemical Properties ◽  
Packaging Materials ◽  
Physico Chemical ◽  
Ginger Powder ◽  
Polyethylene Terephthalate Bottles ◽  
Green Banana

The present study aimed at development of finger millet-based functional beverage mix with 9% green banana flour and 1% ginger powder. The developed beverage mix was packed by using four different packaging materials i.e., low-density polyethylene (P1), standup pouch (P2), aluminium foil pouch (P3) and polyethylene terephthalate bottles (P4) and stored at room temperature. The changes in the physico-chemical, microbial quality were analyzed for 3 months (90 days). The results revealed that during storage, the moisture content was increased from 6.23 to 6.99%, whereas other chemical properties viz., carbohydrate (CHO), protein, fat, ash and dietary fiber were gradually decreased from 68.62 to 68.48, 15.09 to 14.99, 1.50 to 1.48, 3.74 to 3.73 and 2.78 to 2.77 respectively. There was no signifance change in calcium and phosphorus among the packaging materials during storage. The microbial load was low in P3 and P4 packed beverage mix during storage. The functional beverage mix packed in polyethylene terephthalate bottles was undergone minimum changes in physico-chemical characteristics. Hence, it is concluded that the storage of functional beverage mix in polyethylene terephthalate bottles extended the shelf life of the product and reduced the nutrient losses during storage.

scholarly journals Pengaruh Ekstrak Propolis sebagai Edible Coating terhadap Karakteristik Kimia dan Aktifitas Antioksidan Daging Sapi pada Penyimpanan Suhu Ruang

2021 ◽  
Vol 9 (2) ◽  
pp. 72-78
Author(s):  
Andre ◽  
A. Apriantini ◽  
C. Budiman
Keyword(s):  
Moisture Content ◽  
Water Content ◽  
Room Temperature ◽  
Edible Coating ◽  
Chemical Characteristics ◽  
Room Temperature Storage ◽  
Propolis Extract ◽  
Randomized Design ◽  
Temperature Storage

This aim of this study is to determine the effect of using propolis extract as edible coating for beefon chemical characteristics consisting of moisture content, malondialdehyde value and antioxidantactivity at room temperature storage. This research used randomized design with 4 treatments and 3replications. The treatment applied in this study was immersing the meat in propolis extract with differentconcentrations, that are 0.5%, 1.0%, and 1.5% propolis coating. Coating meat with the addition ofpropolis extract was able to have a significant effect at a concentration of 0.5% on water content and theantioxidant activity of coating meat (P <0.05). The addition of propolis extract at various concentrationscan maintain the quality of beef by reducing rancidity during storage. The increasing concentration ofpropolis extract caused the decreasing of MDA value.

scholarly journals Effect of Leaf Extract (Jatropha curcas L.) Towards the Microbiolagic Quality of Layang Fish TPC (Decapterus sp.) At Room Temperature Storage

2021 ◽  
Author(s):  
Rahim Husain ◽  
Lis M Yapanto ◽  
Zainab Y Umar
Keyword(s):  
Jatropha Curcas ◽  
Leaf Extract ◽  
Room Temperature ◽  
Room Temperature Storage ◽  
Main Research ◽  
Jatropha Curcas L ◽  
Preliminary Research ◽  
Hedonic Quality ◽  
Temperature Storage

This study aims to determine the effect of Jatropha Curcas L. leaf extract on the freshness quality of Layang Fish (Decapterus sp.) At room temperature storage. The research consisted of two stages, namely preliminary research and main research. Preliminary research is determining the concentration of castor leaves. The main research is the concentration of Jatropha leaves used, which is 16% with a storage time of 10 hours, 14 hours, 18 hours and 22 hours. The test was carried out organoleptically (hedonic quality) and TPC. This design uses kruskall wallis for organoleptic data (hedonic quality), CRD to obtain TPC results. Organoleptic data and TPC that had a significant effect were tested by Duncan's continued test. The results showed that the fresh fly fish preserved with 16% castor leaf extract was able to maintain the quality of the fresh fly fish for 14 hours of storage. The chemical test results showed that the fresh fly fish with 16% castor leaf extract in 14 hours of storage, the microbiological quality obtained ALT value of 5.03 CFU / g, this fulfills SNI 2729.2013 concerning fresh fish.

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