scholarly journals Evaluation of Tendency to Blackspot Bruising and Enzymatic Discoloration of Potato Tubers

2017 ◽  
Vol 75 (1) ◽  
pp. 5-10
Author(s):  
Agnieszka Hara-Skrzypiec
Keyword(s):  
Biochemical Properties ◽  
Quality Traits ◽  
Rotating Drum ◽  
Potato Tubers ◽  
Cultivated Potato ◽  
Mechanical Impact ◽  
Blackspot Bruise ◽  
Enzymatic Discoloration ◽  
Bruise Susceptibility

Abstract Enzymatic discoloration of potato tubers initiated by mechanical impact bruising and the discoloration which appears after tuber cutting are crucial quality traits of the cultivated potato. The presented determination of blackspot bruise susceptibility includes evaluation of the trait with two impact methods - the rotating drum and the falling bolt. These two methods affect both the physical and the biochemical properties of tubers. Evaluation of the discoloration potential after tuber cutting (ED) is also discussed. Evaluating the discoloration potential of tubers is one of the most important points in determining potato quality.

Blackspot bruise susceptibility of potato tubers during growth and storage determined by two different test methods

2002 ◽  
Vol 45 (2-4) ◽  
pp. 187-202 ◽  
Author(s):  
P. E. Lærke ◽  
J. Christiansen ◽  
M. N. Andersen ◽  
B. Veierskov
Keyword(s):  
Test Methods ◽  
Potato Tubers ◽  
Blackspot Bruise ◽  
Bruise Susceptibility ◽  
And Storage

Biochemical study of attached macroalgae from the Madeira Archipelago and beach-cast macroalgae from the Canary Islands: multivariate analysis to determine bioresource potential

2020 ◽  
Vol 63 (3) ◽  
pp. 283-298
Author(s):  
Nuno Nunes ◽  
Sofia Valente ◽  
Sónia Ferraz ◽  
Maria Carmo Barreto ◽  
Miguel A.A. Pinheiro de Carvalho
Keyword(s):  
Biochemical Study ◽  
Algal Species ◽  
Biochemical Properties ◽  
Total Phenolic ◽  
Total Carotenoids ◽  
The North ◽  
Madeira Archipelago ◽  
Total Carbohydrates ◽  
Beach Cast

AbstractFifteen attached macroalgae from the Madeira Archipelago, comprising three green, three red and nine brown algal species, as well as two beach-cast macroalgal samples, collected along the north shore of Gran Canaria, were assessed for their biochemical properties. The analysis included the determination of total minerals, total carbohydrates, protein, lipids, chlorophyll a, total carotenoids, total phenolic content, fucoxanthin and phycobilins (allophycocyanin, phycocyanin and phycoerythrin). The results showed a high variability of biochemical composition, allowing for the targetting of specific bioresources for particular purposes, including functional foods. This work provides the foundation for a biorefinery strategy implementation plan, for which specific macroalgae may be targeted for valuable and beneficial compounds.

570. A medium for the simultaneous enumeration and preliminary identification of milk microflora

1955 ◽  
Vol 22 (1) ◽  
pp. 43-47 ◽  
Author(s):  
Kathleen O. Donovan ◽  
J. M. Vincent
Keyword(s):  
Acid Production ◽  
Skim Milk ◽  
Biochemical Properties ◽  
Viable Count ◽  
Hydrogen Ion ◽  
Ion Concentration ◽  
Hydrogen Ion Concentration ◽  
Pasteurized Milk ◽  
Preliminary Identification

A medium has been developed that permits the viable count of milk bacteria to be combined with the determination of biochemical properties likely to be important in milk itself. This has involved the modification of standard glucose-tryptone skim-milk agar by incorporation of two indicators to detect alkali as well as acid production, substitution of lactose for glucose, and increasing the quantity of skim milk for the detection of proteolysis and casein precipitation. The medium has proved particularly valuable in the study of the thermoduric flora of pasteurized milk. The phenomenon of casein precipitation is, however, less reliably determined than are changes in hydrogen-ion concentration and proteolysis.

scholarly journals Reverse Osmosis of Whey - Valuable Biocomponent of Feed and Food

2020 ◽  
Vol 70 (12) ◽  
pp. 4482-4487
Keyword(s):  
Reverse Osmosis ◽  
Biochemical Properties ◽  
Animal Nutrition ◽  
Antioxidant Compounds ◽  
Cheese Industry ◽  
Animal Feeding ◽  
Western Romania ◽  
Technological Options

Whey is a high-quality dairy by-product from cheese industry, being an important source of valuable proteins. It is important in human and animal nutrition due to its content in enzymes, hormones, vitamins, minerals, and antioxidant compounds, it has low lactose content, very little or it is free of lipids, but the dehydration (drying) technique must be very well chosen to preserve the quantity and quality of components. The objective of our study was to analyze the possibility of concentrating whey by reverse osmosis and having in view the possibility to preserve most of the biochemical properties of whey. Thus, we made comparative tests for quantitative determination of total protein, lipids, pH and acidity for - raw, skimmed and concentrated whey. The results showed that reverse osmosis is a good, cheap and easy-to-use method in cheese factories to obtain whey with well-preserved components. Most of the farmers from western Romania (especially in Timis county) use whey as ingredient of feed products. Studies from previous years present whey as an ingredient of nutritional supplements for animal feeding plan, as well as an ingredient in supplements for athletes and alternative medicine. There are many technological options for whey processing, but the final option must be very well correlated with the final nutritional purpose. Keywords: whey, feed, human, nutrition

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