Russian Journal of Biological Physics and Chemisrty Russian Journal of Biological Physics and Chemisrty АКТУАЛЬНЫЕ ВОПРОСЫ БИОЛОГИЧЕСКОЙ ФИЗИКИ И ХИМИИ 2499-9962 54697 Моделирование в биофизике Modelling in biophycis Моделирование в биофизике Productivity of Phaeodactylum Tricornutum culture in natural light conditions Продуктивность культуры Phaeodactylum Tricornutum в условиях естественного освещения Чекушкин А А Chekushkin A A chekushkin.78@mail.ru Лелеков А С Lelekov A S ФИЦ «Институт биологии южных морей имени А.О. Ковалевского РАН» ru Federal Research Center A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS ru ФИЦ «Институт биологии южных морей имени А.О. Ковалевского РАН» ru Federal Research Center A.O. Kovalevsky Institute of Biology of the Southern Seas of RAS ru 25 12 2021 25 12 2021 6 4 591 596 20 12 2021 20 12 2021 https://rusjbpc.ru/en/nauka/article/54697/view

В работе исследован рост накопительной культуры Phaeodactylum tricornutum в условиях естественного освещения. Эксперимент проводился в районе города Севастополя в горизонтальном фотобиореакторе в зимний период. Все внешние факторы (температура, pH, количество биогенных элементов питательной среды) находились в оптимальном для данного вида диапазоне. Единственной вариабельной величиной являлся приток солнечной радиации. В эксперименте определяли изменения биомассы феодактилума и притока солнечной радиации в течение девяти суток. Показано, что средняя скорость роста составила 2,37 г СВ м-2 сут-1, а прирост плотности Ph. tricornutum за световой день - 4 - 8 г СВ/м2. Величина ночной потери биомассы в среднем равнялась 18 % от текущей биомассы, а потери от дневного прироста достигали 100 %. Сравнение полученных значений с литературными данными показало, величина продуктивность определяется притоком солнечной радиации в области ФАР для данной географической широты. Величина суточного прироста культуры и ночные потери биомассы определяются её биохимическим составом.

The paper is focused on the growth Phaeodactylum tricornutum batch culture in the natural light conditions. The experiments were carried out in the area of the city of Sevastopol in a horizontal photobioreactor in winter. All external factors (temperature, pH, amount of nutrients in the nutrient medium) were in the optimal range for this species. The only variable value was the influx of solar radiation. In the experiment, changes in the Ph. tricornutum biomass and the influx of solar radiation were determined for nine days. It is shown that the average growth rate was 2.37 g DW m-2 day-1. The daylight productivity of Ph. tricornutum was about 4-8 g SV/m2. The averaged value of the night biomass loss was 18 % of the current culture density, and the losses from the daytime gain reached 100%. A comparison of the obtained average productivity of Ph. tricornutum with the literature data showed that the average value is determined by the influx of solar radiation for given geographical latitude. The daylight productivity and night biomass loss is determined by biochemical composition of Ph. tricornutum culture.

 микроводоросли приток солнечной радиации ночная потеря биомассы microalgae influx of solar radiation night biomass loss Работа выполнена в рамках госзадания по теме НИР ФИЦ ИнБЮМ № 121030300149-0.

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