Mode of action of creatinine on colour of cuprous oxide precipitate in Benedict's qualitative sugar test.
نویسندگان
چکیده
Creatinine appears to alter the colour and bulky nature of the cuprous oxide precipitate not by altering the chemical composition of the precipitate but by the physical process of retardation of the growth of newly formed yellow cuprous oxide crystals to large red crystals by adhering to their surface and blocking some sites for further crystal growth.
منابع مشابه
Colour ofSuspensionjust after Boiling Colour of Precipitate after Settling Glucose in Water Glucose in Urine Glucose in Writer Glucose
SYNOPSIS The statement made in some standard textbooksthatBenedict'squalitativetestgivesa green, yellow, or orange-red precipitate with pure solutions of glucose of varying strength has been shown to be incorrect. Pure solutions ofglucose give only a bright red precipitate at all concentrations. These changes in the colour of the suspensions are observed with urinary glucose only. The differenc...
متن کاملColour ofSuspensionjust after Boiling Colour of Precipitate after Settling Glucose in Water Glucose in Urine Glucose in Writer
SYNOPSIS The statement made in some standard textbooksthatBenedict'squalitativetestgivesa green, yellow, or orange-red precipitate with pure solutions of glucose of varying strength has been shown to be incorrect. Pure solutions ofglucose give only a bright red precipitate at all concentrations. These changes in the colour of the suspensions are observed with urinary glucose only. The differenc...
متن کاملBrownish blue Green Bright red Yellow 1 - 0 Brown Greenish yellow Bright red Yellow 1 - 5 Brownish red Yellow Bright rcd Yellow 2 - 0 Red Orangish yellow Bright
SYNOPSIS The statement made in some standard textbooksthatBenedict'squalitativetestgivesa green, yellow, or orange-red precipitate with pure solutions of glucose of varying strength has been shown to be incorrect. Pure solutions ofglucose give only a bright red precipitate at all concentrations. These changes in the colour of the suspensions are observed with urinary glucose only. The differenc...
متن کاملBrownish blue Green Bright red Yellow 1 - 0 Brown Greenish yellow Bright red Yellow 1 - 5 Brownish red Yellow Bright rcd
SYNOPSIS The statement made in some standard textbooksthatBenedict'squalitativetestgivesa green, yellow, or orange-red precipitate with pure solutions of glucose of varying strength has been shown to be incorrect. Pure solutions ofglucose give only a bright red precipitate at all concentrations. These changes in the colour of the suspensions are observed with urinary glucose only. The differenc...
متن کاملBrownish blue Green Bright red Yellow 1 - 0 Brown Greenish yellow Bright red Yellow 1 - 5 Brownish red Yellow Bright rcd Yellow 2 - 0 Red Orangish yellow Bright red Orangish
SYNOPSIS The statement made in some standard textbooksthatBenedict'squalitativetestgivesa green, yellow, or orange-red precipitate with pure solutions of glucose of varying strength has been shown to be incorrect. Pure solutions ofglucose give only a bright red precipitate at all concentrations. These changes in the colour of the suspensions are observed with urinary glucose only. The differenc...
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ورودعنوان ژورنال:
- Journal of clinical pathology
دوره 25 10 شماره
صفحات -
تاریخ انتشار 1972