SU673918A1 - Method of determining soil beta-fructo-furanozidaze activity - Google Patents

Method of determining soil beta-fructo-furanozidaze activity

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Publication number
SU673918A1
SU673918A1 SU772499389A SU2499389A SU673918A1 SU 673918 A1 SU673918 A1 SU 673918A1 SU 772499389 A SU772499389 A SU 772499389A SU 2499389 A SU2499389 A SU 2499389A SU 673918 A1 SU673918 A1 SU 673918A1
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SU
USSR - Soviet Union
Prior art keywords
activity
soil
furanozidaze
fructo
determining soil
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SU772499389A
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Russian (ru)
Inventor
Руслан Петрович Личко
Виталий Васильевич Буйлов
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Институт Агрохимии И Почвоведения Ан Ссср
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Priority to SU772499389A priority Critical patent/SU673918A1/en
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Publication of SU673918A1 publication Critical patent/SU673918A1/en

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II

Изобретение относитс  к области сельского и лесного хоз йства, в частности почвенной биологии и может быть использовано дл  биологической диагностики степени плодороди , эродированности и загр зенени  естественных и культурных почв в цел х защиты окружающей среды.The invention relates to the field of agriculture and forestry, in particular soil biology, and can be used for the biological diagnosis of the degree of fertility, erosion, and pollution of natural and cultivated soils for environmental protection.

Известен способ определени  -фруктофуранозидазной активности, включающий в себ  инкубацию почвы 5%-ным раствором сахарозы и 1 М ацетатным буфером и толуолом в качестве антисептика в течение 24 ч с последующим определением редуцирующих Сахаров титрометрически по Бертрану 1.A known method for the determination of α-fructofuranosidase activity, comprising incubating the soil with a 5% sucrose solution and 1 M acetate buffer and toluene as an antiseptic for 24 hours, followed by the determination of the reducing Sugars by titrometry according to Bertrand 1.

Недостатками этого способа  вл ютс  длительность анализа и недостаточна  точность дл  р да почв, активность которых низка.The disadvantages of this method are the duration of the analysis and the lack of accuracy for a range of soils whose activity is low.

Цель изобретени  - повыщение точности и сокращение продолжительности анализа .The purpose of the invention is to increase the accuracy and reduce the duration of the analysis.

Поставленна  цель достигаетс  тем, что к исходной пробе почвы предварительно добавл ют охлажденную до 2-5°С инкубационную среду, инкубируют почву в течение 1-2 ч, затем добавл ют в качестве ингибитора 0,5N раствор гидроокиси кали , стабилизируют 0,5N раствором хлористого кальци  и определ ют редуцирующие сахара спектрофотометрически.The goal is achieved by first incubating the incubation medium cooled to 2-5 ° C to the initial soil sample, incubating the soil for 1-2 hours, then adding 0.5N potassium hydroxide solution as an inhibitor, stabilizing with 0.5N solution calcium chloride and the reducing sugars are determined spectrophotometrically.

Способ осуществл етс  следующим образом .The method is carried out as follows.

2 г почвы, просе нной через сито 1 мм, помещают в конические колбы на 50 см, затем добавл ют 6 мл охлажденного до 2- 5°С раствора 5%-ной сахарозы, приготовленной на 0,5 М ацетатном буфере с рН 4,7, и 0,5 толуола в качестве антисептика. Содержимое колб тщательно перемещивают и инкубируют в термостате 1-2 ч (в зависимости от активности почв) при 30°С. В течение инкубации колбы посто нно встр хивают . После инкубации в колбы добавл ют по 4 мл 0,5N гидроокиси кали  дл  ингибировани  почвенного фермента и 1 мл 0,5N хлористого кальци  дл  стабилизации почвенной органики. Затем содержимое колб фильтруют или центрифугируют.2 g of soil, sifted through a 1 mm sieve, are placed in conical flasks at 50 cm, then 6 ml of a cooled to 2-5 ° C solution of 5% sucrose prepared in 0.5 M acetate buffer with a pH of 4 is added, 7, and 0.5 toluene as an antiseptic. The contents of the flasks are carefully transferred and incubated in a thermostat for 1-2 hours (depending on the activity of the soil) at 30 ° C. During the incubation, the flasks are constantly shaken. After incubation, 4 ml of 0.5N potassium hydroxide is added to the flasks to inhibit the soil enzyme and 1 ml of 0.5N calcium chloride to stabilize the soil organic matter. Then the contents of the flasks are filtered or centrifuged.

В табл. 1 показано вли ние температуры инкубационной среды на определение ftфруктофуранозидазной активности (25 образцов ).In tab. Figure 1 shows the effect of incubation temperature on the determination of ftfructofuranosidase activity (25 samples).

В табл. 2 проведен сравнительный анализ способов определени  yj-фруктофуранозидазной активности почвы (мг. Глюк/ч на 1 г почвы)In tab. 2, a comparative analysis of the methods for determining the yj-fructofuranosidase activity of the soil (mg. Gluck / h per 1 g of soil)

Контроль - стерилизованна  почва при 180°С в течение 3 ч.The control is sterilized soil at 180 ° C for 3 hours.

Использование предлагаемого способа определени  фруктофуранозидазной активности почв обеспечивает по сравнению с существующим способом более высокую точность определени , сокращает врем  определени  активности Д-фруктофуранозидазы в семь-одиннадцать раз; позвол ет определить активность в разных типах почв, в том числе и в почвах, характеризующихс  низкой уЗ-фруктофуранозидазной активностью .Using the proposed method for determining the fructofuranosidase activity of the soil provides a higher accuracy of determination than the existing method, reduces the time for determining the activity of D-fructofuranosidase by seven to eleven times; It allows to determine activity in different types of soils, including in soils characterized by low UZ-fructofuranosidase activity.

Таблица 1Table 1

4,124,23±4,124,23 ±

± О, 18 ± 0,20± О, 18 ± 0,20

Почва луг.ово -темноцветна  слита , горизонт 0-3 см.The soil is meadow. It is darkly drained, the horizon is 0-3 cm.

Claims (1)

1. Галст н А. Ш. Ферментативна  активность почв Армении. Ереван, «Айастан, 1974, с. 24.1. Tack A. Sh. Enzymatic activity of the soils of Armenia. Yerevan, “Hayastan, 1974, p. 24
SU772499389A 1977-06-22 1977-06-22 Method of determining soil beta-fructo-furanozidaze activity SU673918A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU772499389A SU673918A1 (en) 1977-06-22 1977-06-22 Method of determining soil beta-fructo-furanozidaze activity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU772499389A SU673918A1 (en) 1977-06-22 1977-06-22 Method of determining soil beta-fructo-furanozidaze activity

Publications (1)

Publication Number Publication Date
SU673918A1 true SU673918A1 (en) 1979-07-15

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