scholarly journals Chemical preservatives in foodstuffs IV. Prolongation of the keeping guality of fresh fish by antibiotics

1961 ◽  
Vol 33 (1) ◽  
pp. 111-122
Author(s):  
Reino R. Linko ◽  
Olavi E. Nikkilä ◽  
Jorma J. Laine
Keyword(s):  
Early Phase ◽  
Favorable Effect ◽  
Fresh Fish ◽  
Baltic Herring ◽  
Keeping Quality ◽  
Chemical Preservatives ◽  
And Storage

A study has been made of the effect of antibiotics in the storage of fresh Baltic herring. Experiments were made with muscle homogenates, to which antibiotics were added, and whole fish and fillets, treated by means of dips in antibiotic solutions and storage in antibiotic ice. The temperatures studied were 2°C and 10°C. The antibiotics employed were chlortetracycline and oxytetracycline. It was observed that the antibiotics improved the keeping quality of Baltic herring. In dipping treatments, and in experiments with muscle homogenates, the favorable effect of the antibiotic was observable even at the early phase of the storage, whereas when antibiotic ice was used such effect was only discovered after about one week’s storage. In a comparison of chlortetracycline and oxytetracycline no essential differences were observed in their effectivity.

scholarly journals Chemical preservatives in foodstuffs VI. The effect of silver ions on microbes, in particular on the flora of fresh fish

1966 ◽  
Vol 38 (4) ◽  
pp. 198-209
Author(s):  
Olavi E. Nikkilä ◽  
Alpo Siiriä ◽  
Jorma J. Laine
Keyword(s):  
Aqueous Solution ◽  
Silver Ions ◽  
Mixed Cultures ◽  
Fresh Fish ◽  
Baltic Herring ◽  
Pure Cultures ◽  
Chemical Preservatives

A study has been made of the effect of silver ions upon microbes in water, in rinsing and washing experiments, and in the storage of fresh Baltic herring in ice containing silver ions. It was observed that silver ions were microbicidic in all experiments except in those with stored fish. Even in this case, silver ions were effective in killing bacteria when they were isolated and kept in an aqueous solution. In all the experiments the pure cultures were less resistant than the natural mixed cultures.

Effects of Packaging and Storage on Keeping Quality of Bleached lac

2017 ◽  
Vol 4 (04) ◽  
Author(s):  
S. K. PANDEY ◽  
N. PRASAD ◽  
S. C. SHARMA ◽  
S. SRIVASTAVA
Keyword(s):  
Moisture Content ◽  
Acid Value ◽  
Storage Condition ◽  
Packaging Material ◽  
Packaging Materials ◽  
Open Storage ◽  
Keeping Quality ◽  
Poly Ethylene ◽  
And Storage

A study on the effect of different packaging materials and storage conditions was carried out on keeping quality of freshly prepared bleached lac packaged in five different types of packaging materials: Low Density Poly Ethylene (LDPE ), High Density Poly Ethylene (HDPE), Poly Propylene (PP), Metalized Polypropylene film (METPP) and five layer craft Paper Bag (PG). The samples were stored in both ambient and refrigerated conditions (14-160C) and quality parameters were evaluated at quarterly interval after 3, 6, 9 and 12 months of storage followed by comparison with samples stored in open condition. For storage under ambient condition in room, the flow value (fluidity), life (heat polymerization time) and acid value (AV) of the packaging material was highest for metalized film bag i.e.10mm, 5 min. and 70.69 respectively and impurity content was least (2%) after 3 months of storage due to high amount of moisture (4.12% db) retained in the sample. These parameters were lower in other packaging materials due to lower moisture content (1.38-2.40% db) with the lowest value (1.01% db) in open storage condition. For storage under the refrigerated condition, these parameters were higher compared to ambient storage for all packaging material. Flow value, life and acid value of samples in the metalized bag were highest; 35mm, 10 min. and 74.36 after 3 months of storage. However, these parameters were lower in others packaging materials due lower moisture content (1.50-2.61% db) with lowest value (1.23% db) in open storage condition. The flow and life of samples packaged in metalized film bag were highest i.e. 25mm and 5 minutes respectively after six months of storage as compared to when packaged in others. During the study it was observed that keeping quality of bleached lac samples was better in metalized film bag (82.5µ) compared to other packaging materials for both ambient and refrigerated storage condition.

scholarly journals ​Nutritional Quality and Storage Stability of Processed Biofortified Pearl Millet Varieties

2021 ◽  
Author(s):  
Aashima Bajaj ◽  
Veenu Sangwan ◽  
Varsha Rani ◽  
Asha Kawatra ◽  
Reena Suthar
Keyword(s):  
Pearl Millet ◽  
Peroxide Value ◽  
Nutritional Quality ◽  
Storage Stability ◽  
Nutrient Digestibility ◽  
Limiting Factor ◽  
Keeping Quality ◽  
Maximum Improvement ◽  
And Storage

Background: Poor shelf life and nutrient availability is a limiting factor in adoption of pearl millet. It can be addressed by indigenous processing like malting, blanching and roasting. This study delineates outcome of processing on protein, fat, ash, nutrient digestibility and storage stability of biofortified pearl millet varieties. Methods: Unprocessed, malted, blanched and roasted millet grains’ flour was analysed and compared for protein, fat, ash and nutrient digestibility. To assess storage stability, flours were stored at 25 ± 1°C at 40 ± 2% RH and fat acidity and per oxide values analysed at an interval of 10 days. Result: It was found that the protein and fat contents of flours decreased on processing. Blanched and roasted flours possessed more ash compared to malted flour. The amount of fat and ash in HC-20 was significantly more than that of Dhanshakti variety. Digestibilities of protein and starch, of processed flours improved significantly and maximum improvement was exhibited by malted flours followed by roasted and blanched. The fat acidity and peroxide value of stored flours increased and this increase was more in unprocessed compared to processed flours. The findings of this study can be useful for augmenting the nutritional and keeping quality of pearl millet.

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