scholarly journals Rainbow trout (Salmo irideus) produced in Finland VI. Prolongation of the keeping quality rainbow trout by antioxidants

1969 ◽  
Vol 41 (1) ◽  
pp. 68-71
Author(s):  
Elina Varesmaa
Keyword(s):  
Rainbow Trout ◽  
Control Fish ◽  
Keeping Quality ◽  
Polyethylene Bags ◽  
Series Of Experiments ◽  
In The Beginning

The effect of antioxidants, in the first place BHA, in improving the keeping quality of fresh, gutted rainbow trout was tested in three series of experiments. The fish were packed in polyethylene bags and stored in ice at + 4° C. The freshness of the fish was analyzed by determining the TBA number and by judging the fish organoleptically. In addition, BHA was determined quantitatively in the beginning and at the end of the experiment. The results indicated that BHA distinctly delayed the rancidity of the fish. Fish stored with 0.01 and 0.02 per cent of BHA remained fresh longer, judged both chemically and organoleptically, than the control fish.

The Processing Potentials of Yams (Dioscoarea spp.) II. Precooked Drum Dried Flakes-Instant Yams

1969 ◽  
Vol 60 (2) ◽  
pp. 215-223
Author(s):  
W. J. C. Steele ◽  
G. M. Sammy
Keyword(s):  
Moisture Content ◽  
Starch Content ◽  
Critical Factor ◽  
Apparent Effect ◽  
Steam Cooking ◽  
Keeping Quality ◽  
Polyethylene Bags ◽  
Storage Studies

Drum dried yam flakes were prepared from six varieties representing four species. Steam cooking led to lower flesh loss than water cooking. Certain parts of the cooked yams were pigmented. Stickiness of the reconstituted product varied with varieties, indicating that the free starch content (blue value) was not the only factor affecting stickiness; e.g. Lisbon with a blue value of 860 was less sticky than Cush-cush which had a blue value of 286. The effect of maturity on flake quality indicates that immature tubers were unsuitable for flake production, while storage of tubers up to 20 weeks had no apparent effect on flake quality. Storage studies show that there was a greater loss in quality of flakes stored in polyethylene bags than flakes stored in glass jars, with amber-coloured jars showing a slightly better keeping quality than clear jars. Moisture content was a critical factor in keeping quality. D. alata—Lisbon, Coconut and Oriental gave products with high acceptability.

scholarly journals Rainbow trout (Salmo irideus) produced in Finland VII. Changes in the organoleptic quality and fetty acid composition during frozen storage

1969 ◽  
Vol 41 (3) ◽  
pp. 160-164
Author(s):  
Elina Varesmaa ◽  
Jorma J. Laine ◽  
F. P. Niinivaara
Keyword(s):  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Rainbow Trout ◽  
Acid Composition ◽  
Storage Time ◽  
Frozen Storage ◽  
Organoleptic Quality ◽  
Polyethylene Bags ◽  
Better Than

Rainbow trouts were frozen at –40° C and stored either glazed with water or vacuum packed in polyethylene bags at –18°and –32° C. During the storage time the quality of the fish was tested both organoleptically and by determining the fatty acid composition of the lipids. It was found that the fish were organoleptically uneatable after three months of storage. At –32° C the fish kept their organoleptic quality somewhat better than at –18° C. There were no important differences between the two packing systems used. The fatty acid analyses gave comparable results in all instances and probably changes in the proteins during frozen storage are more significant than changes in the lipids and are mostly responsible for the lowering in quality of frozen rainbow trout.

scholarly journals Irradiation preservation of foods I. Prolongation of the keeping quality of fresh fish by radiation pasteurization

1970 ◽  
Vol 42 (4) ◽  
pp. 254-261
Author(s):  
Reino R. Linko
Keyword(s):  
Shelf Life ◽  
Gamma Rays ◽  
Abdominal Cavity ◽  
Radiation Doses ◽  
Fresh Fish ◽  
Keeping Quality ◽  
Small Doses ◽  
Long Time ◽  
Polyethylene Bags

The prolonging of refrigeration shelf life (at 0° C) of pike and saithe was studied by radiation pasteurizing the fish with cobalt-60 gamma rays. The fish were packed whole in polyethylene bags. The radiation doses varied for pike between 150—1200 krad and for saithe between 150—250 krad. Organoleptic evaluations showed burnt off-flavour and off-odour in irradiated pike, which in fish that had been subject to small doses of 150 and 250 krad disappeared only after about one week of storing under refrigeration. For saithe no off-flavour was noticed when it was irradiated with a dose below 250 krad. After radiation at only 150 krad for saithe and 300 krad for pike the total bacterial counts in the muscle were reduced by nearly 100 per cent. With radiation doses of 150, 250 and 300 krad, the shelf life of pike under refrigeration increased 2.5, 3.5 and 5.2 times, respectively, compared with non-irradiated fish. The shelf-life times listed in the same order were 10, 14 and 21 days, but for non-irradiated fish only 4 days. For saithe the shelf life increased from 23 days (of non-irradiated fish) to 40 days when irradiated with a dose of only 150 krad. When whole fish were irradiated with large doses of 600 and 1200 krad, spoilage caused by bacteria was prevented for a long time while enzymatic spoilage caused by intestines was detected after 38 days as the contents of the intestines became decomposed and the flesh at the side of the abdominal cavity turned soft.

Keeping Quality of Pacific Coast Dogfish. II

1960 ◽  
Vol 17 (6) ◽  
pp. 811-814 ◽  
Author(s):  
B. A. Southcott ◽  
R. H. Moyer ◽  
E. G. Baker ◽  
H. L. A. Tarr
Keyword(s):  
Pacific Coast ◽  
Control Group ◽  
Bacterial Counts ◽  
Keeping Quality ◽  
Polyethylene Bags

Pacific coast dogfish (Squalus suckleyi) were stored in individual polyethylene bags at 0, 5 and 10 °C; a control group of fish was iced. Viable bacterial counts, pH, ammonia and trimethylamine were determined daily. Pronounced ammoniacal odours were noted with only a few samples and were generally strongly masked by putrid odours.

KURIKULUM DAN TANTANGANNYA Studi Kasus Jurusan Perbankan Syariah di SMK Ibnu Sina

2020 ◽  
Author(s):  
Eny Puspita Ningrum
Keyword(s):  
Curriculum Reform ◽  
Face To Face ◽  
Educational Curriculum ◽  
Study Approach ◽  
Technological Advances ◽  
Life Education ◽  
Real Picture ◽  
In The Beginning

Education is an important thing that has become a necessity for every human being in order to achieve a better quality of life. Education cannot be separated from the educational curriculum, which is where the curriculum continues to develop following every development of society and technological advances. The curriculum is the heart of education and is dynamic in nature where the curriculum must always be updated or changed. From this curriculum reform and change, it is a challenge for teachers to continue to innovate to improve the quality of education. By using a qualitative research method a case study approach, it is hoped that it can explain the real picture that is being experienced by the teacher at SMK Ibnu Sina. which focuses on the Sharia Banking major due to changes in the adjusted curriculum because the world is being faced by COVID-19. In the era of COVID-19, the educational curriculum must be adjusted, which in the beginning learning can be face-to-face now has turned into a distance learning online learning model.

The fate of formaldehyde in sugar manufacture and in products

2015 ◽  
pp. 692-696
Author(s):  
Remi Aubry ◽  
Laurence Gasnot
Keyword(s):  
Sugar Industry ◽  
Common Knowledge ◽  
Microbial Populations ◽  
Optimal Dosage ◽  
Consumer Health ◽  
Microbiological Activity ◽  
Specific Process ◽  
Beet Sugar ◽  
Series Of Experiments

A study was carried out in six beet sugar factories in France during the 2012/13 sugar campaign. The objective was to assess the optimal dosage of formaldehyde solutions at specific process stages and in different existing factory set-ups in order to obtain the desired effect on microbial populations, without interference with the quality of the products. In addition harmlessness regarding consumer health was to be demonstrated. A series of experiments was conducted resulting in new data allowing refreshment of common knowledge and references existing regarding the use of formaldehyde solutions in the sugar industry. The effectiveness and convenience for controlling microbiological activity in beet sugar manufacture was assessed. Formaldehyde reduces sugar losses and protects in-process products without harming their further use, such as for ethanol production.

State-of-the-Art: A Systematic Literature Review on Image Segmentation in Latent Fingerprint Forensics

2019 ◽  
Vol 12 ◽  
Author(s):  
Megha Chhabra ◽  
Manoj Kumar Shukla ◽  
Kiran Kumar Ravulakollu
Keyword(s):  
Image Segmentation ◽  
Background Noise ◽  
State Of The Art ◽  
Recognition Rate ◽  
Poor Quality ◽  
Latent Fingerprint ◽  
In The Beginning ◽  
The Comparative Study ◽  
Finger Skin

: Latent fingerprints are unintentional finger skin impressions left as ridge patterns at crime scenes. A major challenge in latent fingerprint forensics is the poor quality of the lifted image from the crime scene. Forensics investigators are in permanent search of novel outbreaks of the effective technologies to capture and process low quality image. The accuracy of the results depends upon the quality of the image captured in the beginning, metrics used to assess the quality and thereafter level of enhancement required. The low quality of the image collected by low quality scanners, unstructured background noise, poor ridge quality, overlapping structured noise result in detection of false minutiae and hence reduce the recognition rate. Traditionally, Image segmentation and enhancement is partially done manually using help of highly skilled experts. Using automated systems for this work, differently challenging quality of images can be investigated faster. This survey amplifies the comparative study of various segmentation techniques available for latent fingerprint forensics.

Impact of gelatin nanogel coating containing thymol and nisin on the microbial quality of rainbow trout fillets and the inoculated Listeria monocytogenes

2021 ◽  
Author(s):  
Fatemeh Mohajer ◽  
Saeid Khanzadi ◽  
Kobra Keykhosravy ◽  
Seyyed Mohammad Ali Noori ◽  
Mohammad Azizzadeh ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Listeria Monocytogenes ◽  
Microbial Quality

scholarly journals Comparisons among rainbow trout, Oncorhynchus mykiss, populations of maternal transcript profile associated with egg viability

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Gregory M. Weber ◽  
Jill Birkett ◽  
Kyle Martin ◽  
Doug Dixon ◽  
Guangtu Gao ◽  
...  
Keyword(s):  
Rainbow Trout ◽  
Egg Quality ◽  
Transcript Abundance ◽  
Differentially Expressed ◽  
Rainbow Trout Oncorhynchus Mykiss ◽  
Analysis Group ◽  
Maternal Transcripts ◽  
Single Batch ◽  
Insight Into

Abstract Background Transcription is arrested in the late stage oocyte and therefore the maternal transcriptome stored in the oocyte provides nearly all the mRNA required for oocyte maturation, fertilization, and early cleavage of the embryo. The transcriptome of the unfertilized egg, therefore, has potential to provide markers for predictors of egg quality and diagnosing problems with embryo production encountered by fish hatcheries. Although levels of specific transcripts have been shown to associate with measures of egg quality, these differentially expressed genes (DEGs) have not been consistent among studies. The present study compares differences in select transcripts among unfertilized rainbow trout eggs of different quality based on eyeing rate, among 2 year classes of the same line (A1, A2) and a population from a different hatchery (B). The study compared 65 transcripts previously reported to be differentially expressed with egg quality in rainbow trout. Results There were 32 transcripts identified as DEGs among the three groups by regression analysis. Group A1 had the most DEGs, 26; A2 had 15, 14 of which were shared with A1; and B had 12, 7 of which overlapped with A1 or A2. Six transcripts were found in all three groups, dcaf11, impa2, mrpl39_like, senp7, tfip11 and uchl1. Conclusions Our results confirmed maternal transcripts found to be differentially expressed between low- and high-quality eggs in one population of rainbow trout can often be found to overlap with DEGs in other populations. The transcripts differentially expressed with egg quality remain consistent among year classes of the same line. Greater similarity in dysregulated transcripts within year classes of the same line than among lines suggests patterns of transcriptome dysregulation may provide insight into causes of decreased viability within a hatchery population. Although many DEGs were identified, for each of the genes there is considerable variability in transcript abundance among eggs of similar quality and low correlations between transcript abundance and eyeing rate, making it highly improbable to predict the quality of a single batch of eggs based on transcript abundance of just a few genes.

Keeping Quality of Pacific Coast Dogfish

1959 ◽  
Vol 16 (6) ◽  
pp. 791-794 ◽  
Author(s):  
R. H. Moyer ◽  
B. A. Southcott ◽  
E. G. Baker ◽  
H. L. A. Tarr
Keyword(s):  
Pacific Coast ◽  
Sea Water ◽  
Total Volatile ◽  
Bacterial Counts ◽  
Ph Values ◽  
Appreciable Increase ◽  
Muscle Ph ◽  
Keeping Quality ◽  
Viable Bacteria

Pacific coast dogfish (Squalus suckleyi) were held 21 days in ice and in refrigerated sea water with and without added chlortetracycline, viable bacterial counts and volatile bases being determined periodically. Viable bacteria increased sharply after about 14 days but the muscle pH values showed little or no increase. No appreciable increase in the total volatile base or trimethylamine content of the muscle was noted until the fish were stored for more than 2 weeks, and then the increases observed were comparatively small.

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