摘要:
The present subject matter provides biosensors for bicarbonate and calcium as well as compositions, devices, and methods comprising such biosensors.
摘要:
A dairy solution analysis method and an electronic device thereof, a portable dairy solution analysis device and a computer-readable storage medium are disclosed. The dairy solution analysis method includes: detecting a test value of at least one indicator of a dairy solution with a test paper based on a colorimetric biochemical testing method; outputting an analysis result of the dairy solution based on the test value of the at least one indicator of the dairy solution.
摘要:
Provided herein are methods, systems, and apparatus related to sensing and measuring various components in non-homogenized solutions. Also provided herein are systems for sensing a property of a solution containing one or more components. Also provided herein are methods for determining fat content in a non-homogenized solution.
摘要:
A method of and apparatus (18) are described for assessing fat in whey in the making of a dairy product in accordance with a dairy product recipe. The method comprises the steps of: a. using one or more optical sensors (61, 62, 63, 64) to sense at least one stream (22, 24, 27, 29) of whey separated from curd in dairy product making apparatus (18) and generate one or more signals indicative of the degree of occlusion of the stream (22, 24, 27, 29) of whey; b. converting or processing one or more said signals as a measure of the specific mass of fat lost from curd in a dairy product making plant (18) in the stream of whey; c. assessing whether the value of specific mass of fat lost obtained in Step b lies within or outside a predetermined fat loss range; and d. if the said value of specific mass of fat lost is outside the predetermined range, adjusting the recipe so that the value of specific mass of fat lost lies within the predetermined range.
摘要:
A system for analyzing fluid includes a housing having first and second opposing surfaces spaced to form a fluid chamber, a light source disposed to direct light at the first surface of the housing; and a digital imaging circuit disposed to detect light at the second surface of the housing. The digital imaging circuit includes a pixel array configured to capture one or more digital images of an illuminated fluid. The system also includes a processor configured to: capture multiple digital images of the fluid at different camera exposure levels, calculate a net radiant energy value at a plurality of different integration times within at least two images, calculate a slope of the net radiant energy value with respect to integration time in a selected image, and determine size distribution and volume fraction of particles within the fluid based on the calculated slope.
摘要:
A method and an apparatus that make an easy and quick measurement of the concentration of materials in a suspension possible with high precision and without essentially changing the structure of the conventional spectrometer for pre-dispersive spectrometry are provided by nullifying the limitation of a container of a sample as compared to transmission measurement. A spectrometer equipped with an integrating sphere is used to measure the reflection spectrum from a suspension in a container when the suspension is irradiated with measurement light, of which the wavelengths are selected from a wavelength range including near infrared, reflection spectra of a number of types of standard samples, of which the concentrations in the suspension are already known, are used to prepare a measurement model in accordance with an assay technique on the basis of a recursion, and the concentration of a material in the suspension is found using the measurement model.
摘要:
The present invention relates in particular to a method to evaluate the quantity of methane produced by a dairy ruminant. The method comprises determination of the ratio between the quantity of fatty acids with 16 carbon atoms or less and the sum of the total fatty acids of the milk, said quantity of methane being defined by the following equation: Quantity CH4=(FA
摘要:
The nutritional quality of milk lipids is determined by a method for predicting percentages of minor fatty acids in milk. A database is created by correlating known fatty acid profiles of reference milk samples obtained by gas phase chromatography to mid-infrared spectra to obtain calibrations, wherein the calibrations vary in accuracy from one fatty acid to another. The determination of a milk fatty acid profile to be analyzed through infrared treatment is limited to some fatty acids with a satisfactory calibration. Equations to predict the percentages of minor fatty acids are developed using correlations of fatty acids with satisfactory calibrations.
摘要:
A method for determining the nutritional quality of milk lipids, involving the steps consisting in considering a defined number of reference milk samples; determining, for each of said reference samples, a fatty acid profile and an infrared spectrum obtained through reflection on the reference sample of a radiation in the mean infrared and associating respectively the fatty acid profiles to the infrared spectra, subjecting the milk to be analyzed, the lipid nutritional quality is to be determined, to an infrared radiation, so as, through reflection, to infer an infrared spectrum, and comparing the milk infrared spectrum to be analyzed to the infrared spectra of the reference samples, so as to infer a fatty acid profile of the milk to be analyzed.
摘要:
An assembly for extracting analytes from a sample using a fluid under pressure, and embodying the invention, includes an extraction cell receiving the sample and having a chamber body closed at one end by a translatable slide block assembly in fluid communication with the fluid under pressure to introduce the fluid under pressure into the sample located within the chamber body; and a cylinder block assembly at the opposite end of the chamber body for extracting the fluid passing through the sample, the sample being enclosed in a vessel having a thimble body closed at opposite ends by pressure-fit end cap assemblies, each having a thimble cap, a seal, and a frit cap assembly for retaining the sample within the thimble body and permitting the passage of the fluid therethrough.