The viscosity of the clarified juice was appreciably lower than that of regular juice , i.e. 15.55 mPa for serum and 164 mPa (at 100 s−1) for regular orange juice concentrate (65 °C, 66.5 ∘Brix). Flow behavior of orange juice serum tended to be Newtonian.
Is Apple Juice high or low viscosity?
Apple juice contains up to 15% starch, which can slow down filtration due to membrane fouling and cause high viscosity and hazing of the juice.
Does orange juice have a low viscosity?
The orange juice concentrates of the present invention are characterized by their relatively low viscosity . The orange juice concentrates of the present invention have viscosities of about 5.5 centipoise or less (preferably about 5 centipoise or less) when measured at 8° C. and at a juice solids centent of 11.8° Brix.
How do you measure the viscosity of a juice?
viscosity by determining the time required for a given volume to pass a gradua- tion mark under standard condition (e.g. constant-temperature water-bath). By selecting the proper diameter and length of capillary and in some instruments the size of bulb , the viscosity of juices can be measured.
Is juice viscous?
The viscosity data of juices ( 1.53–3300 mPa s ) were obtained from the literature for a wide range of concentration (5–70 °Brix) and temperature (30.7–71.7 °C). ... This may also be useful in mass transfer calculations during filtration of the juice using membranes for clarification.
What liquid has lowest viscosity?
Water, gasoline , and other liquids that flow freely have a low viscosity. Honey, syrup, motor oil, and other liquids that do not flow freely, like those shown in Figure 1, have higher viscosities.
What is the most viscous liquid?
One of the most viscous liquids known is pitch, also known as bitumen, asphalt, or tar . Demonstrating its flow and measuring its viscosity is the subject of the longest continuously running scientific experiment, begun in 1927 at the University of Queensland in Australia.
Does orange juice have a higher or lower viscosity?
Does orange juice have a high viscosity? The viscosity of the clarified juice was appreciably lower than that of regular juice , i.e. 15.55 mPa for serum and 164 mPa (at 100 s−1) for regular orange juice concentrate (65 °C, 66.5 ∘Brix). Flow behavior of orange juice serum tended to be Newtonian.
What is the viscosity of orange juice?
| Liquid Specific Gravity @ 16°C Absolute Viscosity cP | Orange Juice Concentrate 30 Brix 630 | Orange Juice Concentrate 30 Brix 91 | Orange Juice Concentrate 50 Brix 2410 | Orange Juice Concentrate 50 Brix 330 |
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What is viscosity of water?
The viscosity of water at a temperature of 20 degrees Celsius is approximately 0.01 poise or 10 – 3 Pa. s (Pascal seconds). Viscosity is a measure of the resistance of a fluid to deformation at a given rate. For liquids such as water, viscosity can be perceived as a measure of the liquid’s resistance to flow.
What is milk viscosity?
for natural pasteurized milk varied from 5.68 to 7.18 and for remade milk from 6.26 to 12.60 at 25°C. ... The viscosity of milk as determined is, to a certain extent, dependent upon the temperature at which the milk has been held. The viscosity is decreased slightly by pasteurization at 62−65°C.
What is the viscosity of apple juice?
| Food Temperature ( o C) Absolute Viscosity (Pa s) | Apple juice, 20 o Brix 27 0.0021 | Apple juice, 60 o Brix 27 0.03 | Corn oil 25 0.0565 | Corn oil 38 0.0317 |
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What is the viscosity of vinegar?
| Liquid Specific Gravity @ 16°C Absolute Viscosity cP | Sorbitol 1.29 200 | Tomato Ketchup 1000 | Tomato Paste 30% 195 | Vinegar 12-15 |
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What is the viscosity of jam?
Viscosity in jam, squash and ready-to-drink juice
Results as shown in Table 2 indicated that jamun jam has 47841 to 46093 (poise) viscosity which is absolutely high. Viscosity standards for low and high viscosity ranged from, 20000 to 40000 poise (Rao and Steffe, 1992).
How do you determine the pectin content of fruits?
- A large, firm clump will tell you that the fruit contains a high level of pectin.
- Two or three smaller, softer lumps indicate a medium level of pectin.
- Lots of little, soft lumps tell you that the fruit is low in pectin.
How does a viscometer work?
They measure the torque required to rotate a disk or bob in a fluid at a known speed . “Cup and bob” viscometers work by defining the exact volume of a sample to be sheared within a test cell; the torque required to achieve a certain rotational speed is measured and plotted.
