Parasitic plants, such as toji acquire nutrients through xylem of the host plants. To investigate the influence of parasitic-host interactions on phenolic composition and antioxidant activity from arid sites of Sonora, Mexico is the objective of this research. Organic and aqueous extracts from trees (stems) such as Prosopis glandulosa (Mesquite), Olneya tesota (Palo fierro), Parkinsonia aculeata (Palo verde), Acacia farnesiana (Vinorama), Quercus sp. (Encino o Oak), and Phoradendron californicum (toji) were collected in an arid zone. Each plant was analyzed for phytochemical screening, phenolic composition using Folin-Ciocalteu, AlCl₃, DNP methods and reversed phase high performance liquid chromatography. In vitro the antioxidant properties were determined by 1,1-diphenyl-2- picryl hydrazyl radical scavenging (DPPH), ferric reducing antioxidant power (FRAP) and superoxide radical scavenging (O₂). Pearson correlation was used for quantifying the relationship between phenolic content and antioxidant activity in toji compared to their non-parasitic hosts. The highest content of phenolic compounds and antioxidant capacity was found in the parasitic toji (Phoradendron californicum) compared to their hosts. Some correlations (r > 0.5, P < 0.01) between Mesquite or Vinorama (hosts) and toji secondary compounds (flavonoids and tannins) and between Oak and toji phenols and tannins could indicate that toji (parasite) might get some chemical compounds transferred from the host xylem.

诸如东芝之类的寄生植物通过宿主植物的木质部获取营养。从墨西哥索诺拉州干旱地区调查寄生虫与宿主的相互作用对酚类成分和抗氧化活性的影响是本研究的目的。从树（茎）的有机和水提取物，如Prosopis glandulosa（豆科灌木），Olneya tesota（Palo fierro），Parkinsonia aculeata（Palo verde），Acacia farnesiana（Vinorama），Quercus sp.。（Encino o Oak）和Phoradendron californicum（toji）收集在一个干旱地区。使用Folin-Ciocalteu，AlCl ₃对每种植物进行植物化学筛选，酚类成分分析，DNP方法和反相高效液相色谱。在体外，通过1，1-二苯基-2-甲基苄基肼基自由基清除剂（DPPH），三价铁还原抗氧化剂能力（FRAP）和超氧化物自由基清除剂（O ₂）测定抗氧化剂性能。与非寄生虫宿主相比，皮尔逊相关性用于量化toji中酚含量和抗氧化活性之间的关系。寄生曲霉（Phoradendron californicum）中酚类化合物含量和抗氧化能力最高。）与他们的主持人相比。豆科灌木或Vinorama（宿主）与toji次要化合物（类黄酮和单宁）之间以及Oak和toji酚与单宁之间的某些相关关系（r> 0.5，P <0.01）可能表明toji（寄生虫）可能会从中分离出一些化合物。宿主木质部。