Sap Productivity of the High-Mountain Maple Stands in the North Caucasus. P. 106–118

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630*8

DOI:

10.37482/0536-1036-2025-6-106-118

Abstract

The characteristics of maple syrup produced from Acer Trautvetteri Medw., growing on the northern macroslopes of the Caucasus, are presented in the article. The object of the study has been high-mountain maple stands at the lower limit of the vertical belt of their distribution. The geographical coordinates of the object are 42°56.352 N, 44°29.677 E. The altitude above sea level is 1374–1398 m. The slope steepness is 30–35°, the slope is exposed to the north. The beginning of sap secretion is the 3rd ten-day period of April, the duration of sap production is 12–17 days. The tapping has been carried out using a closed method. It has been shown that maple stand sap productivity averages about 4 t/ha per season. The main characteristics of maple sap and syrup have been determined by liquid chromatography in isocratic and gradient modes. The chemical composition of the syrup and the content of organic and inorganic components have been determined using a Maestro liquid chromatograph with spectrophotometric and refractometric detectors. The quantitative analysis of the elemental composition based on atomic absorption spectra has been carried out using a Contra AA 800 spectrometer with a flame and electrothermal atomizers. The sugar content in the sap has equaled 0.9–1.3 %. Maple sap syrup has been obtained by evaporation. The sugar content in the Trautvetter maple syrup has equaled 41 %, which is 12 % less than in the syrup produced in Canada. The proportion of glucose in the syrup is 1.7 %, the proportion of sucrose – 39.2 %. The content of Ca is 1286 mg/kg, the content of K – 9063 mg/kg. The elements such as Fe, Mn, Cu and Na in the syrup are present in small volumes – from 1 to 144 mg/kg. In terms of the content of identified chemical elements and organoleptic characteristics, syrup from the sap of the Trautvetter maple differs from syrup from the Canadian sugar maple. The data obtained contribute to solving the tasks of estimating the reserves of potential food resources of mountain forests in Russia. The results of the study can be used to update regulatory documents in the forestry sector and implemented into training programs for forestry specialists.

Authors

Khetag M. Khetagurov¹, Doctor of Biology, Prof.; ResearcherID: AAI-6375-2021, ORCID: https://orcid.org/0000-0002-2684-897X
Igor A. Nikolaev¹, Candidate of Biology, Assoc. Prof.; ORCID: https://orcid.org/0000-0002-2379-7601
Anatoly V. Gryazkin^2, Doctor of Biology, Prof.; ResearcherID: C-6699-2018, ORCID: https://orcid.org/0000-0002-7901-2180
Inna K. Sattsaeva¹, Candidate of Engineering, Assoc. Prof.; ORCID: https://orcid.org/0000-0002-5749-6735
Chan Chung Thanh³, Candidate of Agriculture, Researcher; ResearcherID: ABB-4415-2021, ORCID: https://orcid.org/0000-0002-0728-3547

Affiliation

¹North Ossetian State University named after Kosta Levanovich Khetagurov, ul. Vatutina, 44–46, Vladikavkaz, 362025, Russian Federation; zaz81@inbox.ru, bootany@yandex.ru, catcaeva@mail.ru
²Saint-Petersburg State Forest Technical University named after S.M. Kirov, per. Institutsky, 5U, Saint Petersburg, 194021, Russian Federation; lesovod@bk.ru
³Research Institute for Forest Ecology and Environment, Vietnamese Academy of Forest Sciences, Duc Thang Str., 46, Bac Tu Liem District, Hanoi, Vietnam; thanh.tt@rcfee.org.vn

Keywords

mountain forests, Trautvetter maple, sap productivity, maple syrup

For citation

Khetagurov Kh.M., Nikolaev I.A., Gryazkin A.V., Sattsaeva I.K., Thanh С.С. Sap Productivity of the High-Mountain Maple Stands in the North Caucasus. Lesnoy Zhurnal = Russian Forestry Journal, 2025, no. 6, pp. 106–118. (In Russ.). https://doi.org/10.37482/0536-1036-2025-6-106-118

References

1. Vinogradov-Nikitin P.Z. Maple Sap and Sugar Extraction in Borjomi. Trudy po prikladnoj botanike, genetike i selektsii, 1929, vol. 20, pp. 8–12. (In Russ.).

2. Gordienko V.A., Solntsev G.K. Forest Uses in the North Caucasus. Moscow, Federal Service for Forestry of the Russian Federation, All-Russian Scientific Research Information Centre “Lesresurs”, 1999. 472 p. (In Russ.).

3. Gryazkin A.V. Non-Timber Forest Products. St. Petersburg, Lan’ Publ., 2021. 248 p. (In Russ.).

4. Gryazkin A.V., Danilov D.A., Zaytsev D.A., Hoang M.A., Thanh T.T. Regulation of Sap Release when Tapping Betula pendula Roth. Lesnoy Zhurnal = Russian Forestry Journal, 2023, no. 4, pp. 180–189. (In Russ.). https://doi.org/10.37482/0536-1036-2023-4-180-189

5. Zernov A.S. Flora of the North-West Caucasus. Moscow, KMK Publ. House, 2022. 665 p. (In Russ.).

6. Meledina T.V., Davydenko S.G., Vasil’eva L.M. Physiological State of Yeast. St. Petersburg, ITMO University, Institute of Refrigeration and Biotechnology, 2013. 48 p. (In Russ.).

7. Murdalov M.M. Caucasian Switzerland. Chechnya. Izdatel’skie resheniya Publ., 2020. 725 p. (In Russ.).

8. Obozov N.A. Organization of Secondary Uses and Specialized Farms. Moscow, Lesnaya Promyshlennost’ Publ., 1986. 355 p. (In Russ.).

9. Examples of International Experience in Sustainable Forest Management and Forest Exploitation: Collection of Articles. Ed. by N. Shmatkov. Moscow, World Wildlife Fund (WWF), 2012. 180 p. (In Russ.).

10. Natural Resources of the Republic of North Ossetia-Alania: in 18 vols. Plant Life. Vladikavkaz, Proekt-Press, 2000. 544 p. (In Russ.).

11. Sokolovskij I.O., Rakhteenko I.N. Tapping of Norway Maple (Acer platanoides) in Belarus. Collection of Works of the Central Research Institute of Forestry, 1936, no. 4, pp. 32–52. (In Russ.).

12. Tkachenko K.G. Complementary Methods for Studying Resource Plant Species in Field and Stationary Conditions. Polevoj zhurnal biologa = Field Biologist Journal, 2021, vol. 3, no. 1, pp. 74–86. (In Russ.). https://doi.org/10.52575/2658-3453-2021-3-1-74-86

13. Works of the Free Economic Society for the Encouragement of Agriculture and House Building in Russia. St. Petersburg, Printing House of the Imperial Foundling Hospital, 1766, part 2. 333 p. (In Russ.).

14. Firsov G.A., Tkachenko K.G., Trofimova A.S. Species of Acer L. Genus at Peter the Great Botanic Garden of Komarov Botanical Institute of Russian Academy of Sciences. Polevoj zhurnal biologa = Field Biologist Journal, 2021, vol. 3, no. 4, pp. 357–369. (In Russ.). https://doi.org/10.52575/2712-9047-2021-3-4-357-369

15. Khetagurov Kh.M. Structural Organization and Resources of High-Mountain Maple Forests of the Central Caucasus: Dr. Biol. Sci. Diss. Vladikavkaz, 2019. 326 p. (In Russ.).

16. Khetagurov Kh.M., Bazaev A.B., Gryazkin A.V., Tigiev S.E. Sap Productivity of Acer trautvetteri Medw. in the Conditions of North Ossetia. Agrarnyj nauchnyj zhurnal = The Agrarian Scientific Journal, 2013, no. 5, pp. 45–48. (In Russ.).

17. Khetagurov Kh.M., Gryazkin A.V. High-Mountain Maple Stands of North Ossetia. St. Petersburg, Nauka Publ., 2013. 146 p. (In Russ.).

18. Khetagurov Kh.M., Nikolaev I.A., Bazaev A.B. Trautvetter Maple in the Republic of North Ossetia–Alania. Izvestiya Gorskogo gosudarstvennogo agrarnogo universiteta = Proceedings of Gorsky State Agrarian University, 2014, vol. 51, no. 2, pp. 284–289. (In Russ.).

19. Khetagurov Kh.M., Nikolaev I.A., Gryazkin A.V., Bazaev A.B. Sap Productivity of Redwood Maple. Izvestiya Gorskogo gosudarstvennogo agrarnogo universiteta = Proceedings of Gorsky State Agrarian University, 2024, vol. 61-2, pp. 115–123. (In Russ.). https://doi.org/10.54258/20701047_2024_61_2_115

20. Anes J., Fernandes P. Towards the Continuous Production of Fructose Syrups from Inulin Using Inulinase Entrapped in PVA-Based Particles. Biocatalysis and Agricultural Biotechnology, vol. 3, iss. 4, 2014, pp. 296–302. https://doi.org/10.1016/j.bcab.2013.11.006

21. Boxall P.C., Murray G., Unterschultz J.R. Non-Timber Forest Products from the Canadian Boreal Forest: an Exploration of Aboriginal Opportunities. Journal of Forest Economics, 2003, vol. 9, no. 2, pp. 75–96. https://doi.org/10.1078/1104-6899-00027

22. Ciesla W.M. Non-Wood Forest Products from Temperate Broad-Leaved Trees. Rome, Food and Agriculture Organization of the United Nations, 2002. 125 p.

23. Cherniavskih V.I., Sidelnikov N.I., Dumacheva E.V., Borodaeva Z.A., Glubsheva T.N., Gorbacheva A.A., Vorobyova O.V., Korolkova S. Biological Resources of Natural Forage Grassland of the Cretaceous South of the European Russia. EurAsian Journal of BioSciences, 2019, vol. 13, iss. 2, pp. 845–849.

24. Dumacheva E.V., Cherniavskih V.I., Markova E.I., Filatov S.V., Tokhtar V.K., Tokhtar L.A., Pogrebnyak T.A., Horolskaya E.N., Gorbacheva A.A., Vorobyova O.V., Glubsheva T.N. Biological Resources of the Hyssopus L. on the South of European Russia and Prospects of its Introduction. International Journal of Green Pharmacy (Supplementary Issue), 2017, vol. 11, no. 3, pp. 476–480.

25. Gelderen van D.M., Jong de P.C., Oterdoom H.J. Maples of The World. Oregon, Portland, Timber Press, 1994. 458 p.

26. Global Forest Resources Assessment. FAO Forestry Paper 140. Rome, Food and Agriculture Organization, 2001. 479 р.

27. Lund H.G., Pajari B., Korhonen M. (eds.) The Non-Wood Forest Resources Mystery. Sustainable Development of Non-Wood Goods and Benefits from Boreal and Cold Temperate Forests: Proceedings of the Workshop, 1998, pp. 32–44.

28. N’guyen G.Q., Martin N., Jain M., Lagacé L., Landry C.R., Filteau M. A Systems Biology Approach to Explore the Impact of Maple Tree Dormancy Release on Sap Variation and Maple Syrup Quality. Scientific Reports, 2018, vol. 8, art. no. 14658. https://doi.org/10.1038/s41598-018-32940-y

29. Non-Wood News. Rome, Food and Agriculture Organization of the United Nations, 2006. 97 p.

30. Nygren A., Lacuna-Richman C., Keinänen K., Alsa L. Ecological, Socio-Cultural, Economic and Political Factors Influencing the Contribution of Non-Timber Forest Products to Local Livelihoods: Case Studies from Honduras and the Philippines. Small-Scale Forest Economics, Management and Policy, 2006, vol. 5, pp. 249–269. https://doi.org/10.1007/s11842-006-0013-5

31. Mahapatra A.K., Tewari D.D. Importance of Non-Timber Forest Products in the Economic Valuation of Dry Deciduous Forests of India. Forest Policy and Economics, 2005, vol. 7, iss. 3, pp. 455–467. https://doi.org/10.1016/j.forpol.2004.02.002

32. Singh R.S., Chauhan K., Singh R.P. Enzymatic Approaches for the Synthesis of High Fructose Syrup. Plant Biotechnology: Recent Advancements and Developments. Singapore, Springer, 2017, pp. 189–211. https://doi.org/10.1007/978-981-10-4732-9_10

33. Wong J.L.G., Thornber K., Baker N. Resource Assessment of Non-Wood Forest Products: Experience and Biometric Principles. Rome, FAO Technical Papers, 2001, no. 13. 109 p.

34. World Forestry Congress (WFC) Side Event. Strengthening Global Part to Advance Sustainable Development of Non-Wood Forest Products, Held in Canada on 20 September 2003. “Frontline Express” (Canadian Forest Service, Great Lakes Forestry Center), 2003, bulletin no. 28. Available at: https://www.sfp.forprod.vt.edu/discussion/(accessed 15.09.24).

35. Zakharenkov A., Lloyd S. Country Dompass Russian Far East. FAO an Information Bulletin on Non Wood Forest Products “Non Wood News”, 1997. 36 p.