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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">vuzbiochemi</journal-id><journal-title-group><journal-title xml:lang="ru">Известия вузов. Прикладная химия и биотехнология</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of Universities. Applied Chemistry and Biotechnology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2227-2925</issn><issn pub-type="epub">2500-1558</issn><publisher><publisher-name>ИРНИТУ</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.21285/2227-2925-2020-10-3-439-449</article-id><article-id custom-type="elpub" pub-id-type="custom">vuzbiochemi-417</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКО-ХИМИЧЕСКАЯ БИОЛОГИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICOCHEMICAL BIOLOGY</subject></subj-group></article-categories><title-group><article-title>Влияние низкотемпературной обработки на активность протеолитических ферментов различных видов муки</article-title><trans-title-group xml:lang="en"><trans-title>Effects of low-temperature treatment on the activity of proteolytic enzymes in various flour types</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Китаевская</surname><given-names>С. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Kitaevskaya</surname><given-names>S. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Китаевская Светлана Владимировна, к.т.н., доцент кафедры технологии пищевых производств</p><p>420015, г. Казань, ул. К. Маркса, 68</p></bio><bio xml:lang="en"><p>Svetlana V. Kitaevskaya, Cand. Sci. (Engineering), Associate Professor, Department of Food Production Technology </p><p>68, K. Marx St., Kazan, 420015</p></bio><email xlink:type="simple">kitaevskayas@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Решетник</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Reshetnik</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Решетник Ольга Алексеевна, д.т.н., профессор, заведующая кафедрой технологии пищевых производств</p><p>420015, г. Казань, ул. К. Маркса, 68</p></bio><bio xml:lang="en"><p>Olga A. Reshetnik, Dr. Sci. (Engineering), Professor, Head of the Department of Food production technology</p><p>68, K. Marx St., Kazan, 420015</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Казанский национальный исследовательский технологический университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kazan National Research Technological University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>08</day><month>10</month><year>2020</year></pub-date><volume>10</volume><issue>3</issue><fpage>439</fpage><lpage>449</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Китаевская С.В., Решетник О.А., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Китаевская С.В., Решетник О.А.</copyright-holder><copyright-holder xml:lang="en">Kitaevskaya S.V., Reshetnik O.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://vuzbiochemi.elpub.ru/jour/article/view/417">https://vuzbiochemi.elpub.ru/jour/article/view/417</self-uri><abstract><p>Целью работы являлось изучение влияния низкотемпературной обработки на активность протеолитических ферментов различных видов и сортов муки. Настоящее исследование позволило более глубоко представить комплекс механизмов, вызывающих изменение биотехнологических процессов в тестовых полуфабрикатах при низкотемпературном хранении. Результаты исследования по влиянию длительного низкотемпературного воздействия на активность протеолитических ферментов различных видов муки показали, что исследуемый параметр зависит от рН среды, а также видовой принадлежности муки. При низкотемпературном хранении наблюдается тенденция к понижению активности кислых протеаз как традиционных, так и нетрадиционных для хлебопечения видов муки в среднем на 10%. Активность слабокислых и слабощелочных протеаз под действием отрицательных температур при хранении зависит от вида исследуемой муки. По мере увеличения продолжительности низкотемпературного воздействия протеолитическая активность полбяной, пшеничной и гречневой муки при рН=5,5 снижается в среднем на 20, 12,5 и 18% соответственно, тогда как ржаной и овсяной, напротив, увеличивается на 12 и 28% соответственно. Под влиянием замораживания и в ходе низкотемпературного хранения происходит прирост активности слабощелочных протеаз всех исследуемых видов и сортов муки на 15,9%, за исключением гречневой, протеолитическая активность которой по мере хранения снижается в 1,5–2 раза. Установлено, что наибольшую стойкость к длительному хранению в замороженном виде проявляют протеолитические ферменты кукурузной муки. Знание о степени влияния низкотемпературной обработки на активность протеолитических ферментов позволит прогнозировать реологические свойства тестовых полуфабрикатов, структурно-механические и органолептические характеристики готовой продукции, а также более грамотно подойти к разработке рецептур и технологических параметров тестоприготовления нового ассортимента хлебобулочных изделий на основе замороженных полуфабрикатов как из традиционных, так и нетрадиционных для хлебопечения видов муки.</p></abstract><trans-abstract xml:lang="en"><p>This work was aimed at investigating effects of low-temperature processing on the activity of proteolytic enzymes in various flour types. This study allowed an improved understanding of the mechanisms that change biotechnological processes in semi-finished dough products during low-temperature storage. The study of the effect of long-term low-temperature exposure on the activity of proteolytic enzymes in various flour types showed that this parameter depends on the medium pH, as well as on the flour type. During low-temperature storage, the activity of acid proteases tend to decrease by, on average, 10% in both traditional and non-traditional types of flour used for baking. The activity of weakly acidic and weakly alkaline proteases under the influence of low temperatures during storage depends on the flour type. At pH = 5.5, an increase in the duration of low-temperature exposure leads to a decrease in the proteolytic activity of spelt, wheat and buckwheat flour by, on average, 20, 12.5, and 18%, respectively. Conversely, this parameter increases in rye and oat flour by 12 and 28%, respectively. Under the influence of freezing and during low-temperature storage, the activity of weakly alkaline proteases in all studied flour types increases by 15.9%, except for buckwheat, the proteolytic activity of which decreases by 1.5–2 times during storage. It was established that proteolytic enzymes of corn flour exhibit the greatest resistance to long-term storage in a frozen form. Knowledge of the effect of low-temperature processing on the activity of proteolytic enzymes is important for predicting the rheological properties of semi-finished dough products and structural-mechanical and organoleptic characteristics of finished products. In addition, this knowledge facilitates the development of recipes and technological parameters for producing new bakery products based on frozen semi-finished products from traditional and non-traditional flour types.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>мука</kwd><kwd>замороженные полуфабрикаты</kwd><kwd>низкотемпературное хранение</kwd><kwd>протеолитическая активность</kwd><kwd>хлебобулочные изделия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>flour</kwd><kwd>frozen semi-finished products</kwd><kwd>low-temperature storage</kwd><kwd>proteolytic activity</kwd><kwd>bakery products</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Герасимова Э.О., Лабутина Н.В. Криогенные технологии в хлебопечении // Известия высших учебных заведений. Пищевая технология. 2019. N 1. С. 6–9.</mixed-citation><mixed-citation xml:lang="en">Gerasimova EO, Labutina NV. Cryogenic technologies  in  bakery.  Izvestiya  vysshikh uchebnykh zavedenii Pishhevaya tehnologiya = News of Institutes of Higher Education. Food Technology. 2019;1:6–9. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Китаевская С.В., Романова Н.К., Попова Е.В., Камартдинова Д.Р. Оптимизация рецептурного состава ржано-пшеничного хлеба, выработанного на основе замороженных полуфабрикатов // XXI век: Итоги прошлого и проблемы настоящего плюс. 2019. Т. 8. N 4. С. 171–176.</mixed-citation><mixed-citation xml:lang="en">Kitaevskaya SV, Romanova NK, Popova EV, Kamartdinova DR. Optimisation of composition rye bread that was produced from frozen dough. XXI vek: Itogi proshlogo i problemy nastoyashchego plus = XXI Century: Resumes of the Past and Challenges of the Present plus. 2019;8(4):171–176. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Козловская А.Э., Лабутина Н.В., Суворов О.А. Влияние хлебопекарных свойств ржаной обдирной муки на теплофизические характеристики ржано-пшеничных полуфабрикатов при замораживании и дефростации // Пищевая промышленность. 2017. N 4. С. 55 - 59.</mixed-citation><mixed-citation xml:lang="en">Kozlovskaya AE, Labutina NV, Suvorov OA. Influence of rye flaked flour baking properties on the thermophysical characteristics of rye-wheat semifinished products during freezing and defrosting. Pishchevaya promyshlennost' = Food Industry. 2017;4:55–59. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Feng W., Ma S., Wang X. Quality deterioration and improvement of wheat gluten protein in frozen dough // Grain &amp; Oil Science and Technology. 2020. Vol. 3. Issue 1. P. 29–37. https://doi.org/10.1016/j.gaost.2020.02.001</mixed-citation><mixed-citation xml:lang="en">Feng W, Ma S, Wang X. Quality deterioration and improvement of wheat gluten protein in frozen dough. Grain &amp; Oil Science and Technology. 2020;3(1):29–37. https://doi.org/10.1016/j.gaost.2020.02.001</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Wang P., Xu L., Nikoo M., Ocen D., Wu F., Yang N., et al. Effect of frozen storage on the conformational, thermal and microscopic properties of gluten: Comparative studies on gluten-, glutenin- and gliadin-rich fractions // Food Hydrocolloids. 2014. Vol. 35. P. 238–246. https://doi.org/10.1016/j.foodhyd.2013.05.015</mixed-citation><mixed-citation xml:lang="en">Wang P, Xu L, Nikoo M, Ocen D, Wu F, Yang N, et al. Effect of frozen storage on the conformational, thermal and microscopic properties of gluten: Comparative studies on gluten-, glutenin- and gliadin-rich fractions. Food Hydrocolloids. 2014;35:238–246. https://doi.org/10.1016/j.foodhyd.2013.05.015</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Wang P., Chen H., Mohanad B., Xu L., Ning Y., Xu J., et al. Effect of frozen storage on physico-chemistry of wheat gluten proteins: Studies on gluten-, glutenin- and gliadin-rich fractions // Food Hydrocolloids. 2014. Vol. 39. Р. 187–194. https://doi.org/10.1016/j.foodhyd.2014.01.009</mixed-citation><mixed-citation xml:lang="en">Wang P, Chen H, Mohanad B, Xu L, Ning Y, Xu J, et al. Effect of frozen storage on physicochemistry of wheat gluten proteins: Studies on gluten-, glutenin- and gliadin-rich fractions. Food Hydrocolloids. 2014;39:187–194. https://doi.org/10.1016/j.foodhyd.2014.01.009</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Giannou V., Tzia C. Frozen dough bread: Quality and textural behavior during prolonged storage e prediction of final product characteristics // Journal of Food Engineering. 2007. Vol. 79. Issue 3. Р. 929–934. https://doi.org/10.1016/j.jfoodeng.2006.03.013</mixed-citation><mixed-citation xml:lang="en">Giannou V, Tzia C. Frozen dough bread: Quality and textural behavior during prolonged storage e prediction of final product characteristics. Journal of Food Engineering. 2007;79(3):929–934. https://doi.org/10.1016/j.jfoodeng.2006.03.013</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Gaikwad S., Arya S.S. Influence of frozen storage on quality of multigrain dough, par baked and ready to eat thalipeeth with additives // LWT – Food Science and Technology. 2018. Vol. 96. Р. 350–356. https://doi.org/10.1016/j.lwt.2018.05.057</mixed-citation><mixed-citation xml:lang="en">Gaikwad S, Arya SS. Influence of frozen storage on quality of multigrain dough, par baked and ready to eat thalipeeth with additives. LWT – Food Science and Technology. 2018;96:350–356. https://doi.org/10.1016/j.lwt.2018.05.057</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Ban C., Yoon S., Han J.W., Sang Oh Kim, Han J.S., Lim S., et al. Effects of freezing rate and terminal freezing temperature on frozen croissant dough quality // LWT – Food Science and Technology. 2016. Vol. 73. Р. 219–225. https://doi.org/10.1016/j.lwt.2016.05.045</mixed-citation><mixed-citation xml:lang="en">Ban C, Yoon S, Han JW, Sang Oh Kim, Han JS, Lim S, et al. Effects of freezing rate and terminal freezing temperature on frozen croissant dough quality. LWT – Food Science and Technology. 2016;73: 219–225. https://doi.org/10.1016/j.lwt.2016.05.045</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Jia C., Yang W.-D., Yang Z., Ojobi O.J. Study of the mechanism of improvement due to waxy wheat fl our addition on the quality of frozen dough bread // Journal of Cereal Science. 2017. Vol. 75. Р. 10–16. https://doi.org/10.1016/j.jcs.2017.03.007</mixed-citation><mixed-citation xml:lang="en">Jia C, Yang W-D, Yang Z, Ojobi OJ. Study of the mechanism of improvement due to waxy wheat fl our addition on the quality of frozen dough bread. Journal of Cereal Science. 2017;75;10–16. https://doi.org/10.1016/j.jcs.2017.03.007</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Frauenlob J., Moriano M.E., Innerkofler U., D'Amico S., Lucisano M., Schoenlechner R. Effect of physicochemical and empirical rheological wheat flour properties on quality parameters of bread made from pre-fermented frozen dough // Journal of Cereal Science. 2017. Vol. 77. Р. 58–65. https://doi.org/10.1016/j.jcs.2017.06.021</mixed-citation><mixed-citation xml:lang="en">Frauenlob J, Moriano ME, Innerkofler U, D'Amico S, Lucisano M, Schoenlechner R. Effect of physicochemical and empirical rheological wheat flour properties on quality parameters of bread made from pre-fermented frozen dough. Journal of Cereal Science. 2017;77:58–65. https://doi.org/10.1016/j.jcs.2017.06.021</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Meziani S., Jasniewski J., Ribotta P.D., Arab-Tehrany E., Muller J.-M., Ghoul M., et al. Influence of yeast and frozen storage on rheological, structural and microbial quality of frozen sweet dough // Journal of Food Engineering. 2012. Vol. 109. P. 538–544. https://doi.org/10.1016/j.jfoodeng.2011.10.026</mixed-citation><mixed-citation xml:lang="en">Meziani S, Jasniewski J, Ribotta PD, Arab-Tehrany E, Muller J-M, Ghoul M, et al. Influence of yeast and frozen storage on rheological, structural and microbial quality of frozen sweet dough. Journal of Food Engineering. 2012;109:538–544. https://doi.org/10.1016/j.jfoodeng.2011.10.026</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Китаевская С.В. Исследование резистентности молочнокислых бактерий к низкотемпературной обработке // Вестник Казанского технологического университета. 2014. N 17. N 23. С. 214–217.</mixed-citation><mixed-citation xml:lang="en">Kitaevskaya SV. Low temperature processing resistance of lactic acid bacteria. Vestnik Kazanskogo tehnologicheskogo universiteta. 2014; 17(23):214–217. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Luo W., Sun D.-W., Zhu Z., Wang Q.-J. Improving freeze tolerance of yeast and dough properties for enhancing frozen dough quality – A review of effective methods // Trends in Food Science &amp; Technology. 2018. Vol. 72. P. 25–33. https://doi.org/10.1016/j.tifs.2017.11.017</mixed-citation><mixed-citation xml:lang="en">Luo W, Sun D-W, Zhu Z, Wang Q-J. Improving freeze tolerance of yeast and dough properties for enhancing frozen dough quality – A review of effective methods. Trends in Food Science &amp; Technology. 2018;72:25–33. https://doi.org/10.1016/j.tifs.2017.11.017</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Белявская И.Г., Лабутина Н.В., Балыхин М.Г., Юркина К.С., Никифорова Д.С., Матвеева И.В. Технологические аспекты криогенных технологий хлебобулочных изделий с использованием Сarbo activatus // Пищевая промышленность. 2019. N 3. С. 40–44.</mixed-citation><mixed-citation xml:lang="en">Belyavskaya IG, Labutina NV, Balyhin MG, Yurkina KS, Nikiforova DS, Matveeva IV. Technological aspects of cryogenic technologies of bakery products  using  Сarbo  activatus.  Pishchevaya promyshlennost' = Food Industry. 2019;3:40–44. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Wang X., Pei D., Teng Y., Liang J. Effects of enzymes to improve sensory quality of frozen dough bread and analysis on its mechanism // Journal Food Science &amp; Technology. 2018. Vol. 55. Issue 1. Р. 389–398. https://doi.org/10.1007/s13197-017-2950-8</mixed-citation><mixed-citation xml:lang="en">Wang X, Pei D, Teng Y, Liang J. Effects of enzymes to improve sensory quality of frozen dough bread and analysis on its mechanism. Journal Food Science &amp; Technology. 2018;55(1):389–398. https://doi.org/10.1007/s13197-017-2950-8</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Laaksonen T.J., Roos Y.H. Thermal and dynamic-mechanical properties of frozen wheat doughs with added sucrose, NaCl, ascorbic acid and their mixtures // International Journal of Food Properties. 2001. Vol. 4. Issue 2. P. 201–213. https://doi.org/10.1081/JFP-100105187</mixed-citation><mixed-citation xml:lang="en">Laaksonen TJ, Roos YH. Thermal and dynamic-mechanical  properties  of  frozen  wheat doughs with added sucrose, NaCl, ascorbic acid and their mixtures. International Journal of Food Properties. 2001;4(2):201–213. https://doi.org/10.1081/JFP-100105187</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Матвеева И.В., Гаццола Д., Страхан С. Биотехнологические решения для замороженных полуфабрикатов и хлебобулочных изделий // Хлебопродукты. 2011. N 9. С. 30–32.</mixed-citation><mixed-citation xml:lang="en">Matveeva IV, Gaccola D, Strahan S. Biotechnological solutions for frozen dough and bakery products. Khleboprodukty. 2011;9:30–32. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Tao H., Han T., Xiao Y., Wu F., Xu X. Optimization of additives and their combination to improve the quality of refrigerated dough // LWT – Food Science and Technology. 2018. Vol. 89. P. 482–488. https://doi.org/10.1016/j.lwt.2017.11.028</mixed-citation><mixed-citation xml:lang="en">Tao H, Han T, Xiao Y, Wu F, Xu X. Optimization of additives and their combination to improve the quality of refrigerated dough. LWT – Food Science  and  Technology.  2018;89:482–488. https://doi.org/10.1016/j.lwt.2017.11.028</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Пучкова Л.И., Поландова Р.Д., Матвеева И.В. Технология хлеба; 4-е изд., перераб. и доп. СПб.: ГИОРД, 2005. 259 с.</mixed-citation><mixed-citation xml:lang="en">Puchkova LI, Polandova RD, Matveeva IV. Bread technology. St. Petersburg: GIORD, 2005. 559 p. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Гридина С.Б., Зинкевич Е.П., Владимирцева Т.А., Забусова К.А. Ферментативная активность зерновых культур // Вестник КрасГАУ. 2014. N 8. С. 57–60.</mixed-citation><mixed-citation xml:lang="en">Gridina SB, Zinkevich EP, Vladimirceva TA, Zabusova KA. Enzymatic activity of crops. Vestnik Krasnoyarskogo gosudarstvennogo agrarnogo universiteta = The Bulletin of KrasGAU. 2014;8:57–60. (In Russian)</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Астахов И.Ю., Курочкин П.П., Игнатов Д.Д. Химический состав и технологические свойства полбяной муки // Инновационная техника и технология. 2015. N 1. С. 59–62.</mixed-citation><mixed-citation xml:lang="en">Astahov IYu, Kurochkin PP, Ignatov DD. Chemical composition and technological properties of spelt flour. Innovatsionnaya tekhnika i tekhnologiya = Innovative Machinery and Technology. 2015;1:59–62. (In Russian)</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
