The study of biologically active compounds and gross β-radioactivity of some vegetables and medicinal plants in conditions of outdoor hydroponic systems and soil culture in Ararat Valley
Notice bibliographique
Résumé
Background: It is known that various natural (40K, 234Th, 231Th, etc.) and technogenic (90Sr, 89Sr, 137Cs, 134Cs, etc.) radionuclides (RN) may enter into the biosphere during the operation of nuclear power plants (NPP). Moving along the transfer chains of irrigation water – soil - plant and hydroponic nutrient solution – substrate - plant, the RN may penetrate human organisms and potentially cause various dangerous diseases. Thus, monitoring the gross β-radioactivity of plant materials (such as vegetables, medicinal plants, fruits, etc.) and ensuring the production of radioecologically safe plant raw materials is a contemporary challenge.Since 1996, we have been conducting radiomonitoring studies in Ararat Valley in the water-soil-plant ecosystem of the zones within the 2-15, 20, and 30 km radius of Armenian NPP (ANPP) technogenic influence. Objective: To reveal the optimal conditions for radio-ecologically safe plant raw material, we compared the gross β-radioactivity of the edible parts of several valuable vegetables (rhubarb - Rheum undulatum L., Chinese cabbage - Brassica rapa subsp. Chinensis, kale - Brassica oleracea var. Sabellica L., spicy pepper - Capsicum frutescens L., (varieties - “Bishops crown”, “Cayenne”, “Chili De arbol”, “Little Elf”, ”Fresno”), cicer - Cicer arietinum L., (varieties - “Kapuli” introduced from the USA, “Desi” introduced from Canada and “Leningradskaya 313” introduced from Russia)) as well as the plant raw materials of medicinal plants (ashwagandha - Withania somnifera L., Moroccan mint - Mentha spicatavar. Crispa, Marokko, Japanese pagoda tree - Sophora japonica L., holy basil - Ocimum tenuiflorum L., and rosemary - Rosmarinus officinalis L.). These plants were introduced into Armenia and grown under various outdoor hydroponic systems (organic, NFT, water stream, drip, and classical hydroponics) and in soil.hydroponics) and soil. The studies were done at the Institute of Hydroponics Problems (IHP) in Ararat Valley (a zone of ANPP with a 30 km radius). It has concrete practical significance since it allows radio-ecologically safe plant raw material to be received. Methods: The gross β-radioactivity of the plant samples was determined using a small background UMF-1500 radiometer. Results: The results of the radiochemical study have shown that in the same zone of radio voltage and climatic conditions of Ararat Valley, several varieties of crops cultivated in hydroponic and soil conditions have accumulated different amounts of β-emitting technogenic and natural RN. The gross β-radioactivity of vegetables fluctuated between 230 - 590 Bq/kg in classic hydroponics and 140 - 480 Bq/kg in soil, and the gross β-radioactivity of medicinal plants was between 320 - 680 Bq/kg in hydroponics and 240 - 450 Bq/kg in soil. In both hydroponic systems andsoil, the gross β-radioactivity of the edible parts of vegetables and medicinal plants follows the same decreasing order: for vegetables, the order is rhubarb > Chinese cabbage > kale > spicy pepper > chickpea; and for medicinal plants, the order is ashwagandha > Moroccan mint > holy basil > Japanese pagoda tree > rosemary. Conclusion: Regardless of the crop varieties and cultivation methods (organic, water stream, drop, classical hydroponics, and soil culture), the plant raw material is considered radio-ecologically safe because their gross β- radioactivity doesn’t exceed the radio-ecological safety threshold stated by the World Health Organization – 1000 Bq/kg. Keywords: vegetables, medicinal herb, radionuclides, nutrient solution, radio-ecological safety
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Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».