BackgroundClinical studies have demonstrated the beneficial effects of unfermented soy product consumption on blood lipids in various populations. However, contradictory results have been reported regarding the influence of unfermented soy product consumption on blood lipids in postmenopausal women.ObjectiveThe aim of this systematic review and meta-analysis was to evaluate the effects of diets with unfermented soy products compared to diets without unfermented soy products on blood lipids in postmenopausal women.MethodsThe Cochrane Library, PubMed, Scopus, Web of Science, and Embase electronic databases were searched for eligible randomized controlled trials (RCTs) published up to February 21, 2023. RCTs were included if they were published in English and investigated the effect of unfermented soy product consumption on blood lipids in postmenopausal women who had discontinued hormone replacement therapy at least three months before randomization. A random effects model was used to calculate the overall effect size of the mean difference (MD) and the 95% confidence interval (CI). The risk of bias was assessed using the Risk of Bias Tool for Randomized Trials (RoB 2.0).ResultsTwenty-nine RCTs involving 2457 participants were included. The results showed that compared with the control group that did not consume unfermented soy products, consumption of unfermented soy products significantly reduced total cholesterol (TC) (MD: −9.46 mg/dL; 95%CI: −15.04 to −3.89; P = 0.001), and triglycerides (TG) (MD: −10.86 mg/dL; 95%CI: −19.70 to −2.02; P = 0.016), while significantly increasing high-density lipoprotein cholesterol (HDL-C) (MD: 2.32 mg/dL; 95%CI: 0.87 to 3.76; P = 0.002) in postmenopausal women, but had no significant effect on low-density lipoprotein cholesterol (LDL-C) (MD: −4.55 mg/dL; 95%CI: −10.90 to 1.80; P = 0.160). Soy preparation subgroup analysis showed that soy isolate protein significantly reduced TC, whereas soy protein-containing isoflavones significantly reduced TC and LDL-C and increased HDL-C. Furthermore, unfermented soy product consumption significantly reduced TC, LDL-C, and TG levels in postmenopausal women with lipid disorders, and TG in healthy postmenopausal women.ConclusionThe results showed that unfermented soy product consumption significantly reduced TC and TG levels, and increased HDL-C levels in postmenopausal women. The findings of this review contribute to the evidence-base for dietary management of blood lipids in postmenopausal women.

Sanjiazi deposit is one of the scheelite deposits in Northeastern China found in recent years.In order to discuss the metallogenesis,their geological and geochemical characteristics of the deposit is studied,including the composition of REE and trace elements in metallogenic granitic rocks,marble wall rock as well as in skarn ores.These granitic rocks containing scheelite mineralization,has similar geochemical features with those of the I-type granites, such as aluminium super-saturation,variable alkaline composition,K_2ONa_2O and low ratio of Rb/Sr.Moreover,the facts of low content of REE,negative δEu anomalies,unobvious δCe anomalies and right-declining chondrite-normalized REE patters demonstrate that tungsten-bearing granitic rocks was derived from deep crust or upper mantle.Together with geological features of the deposit,contents of trace elements and sulfur isotope in different rocks and ores,a conclusion can be drawn that the ore-forming materials,including W element,may come from the Mengjialing intrusion.The Sanjiazi scheelite deposit belongs to the skarn deposit and is related to the NW subduction of the Pacific plate underneath Eurasia plate in the Early Yanshanian period.

Sub-nanometric ZnO clusters were prepared in the micropores of zeolite L by the incipient wetness impregnation method. The X-ray patterns (XRD), transmission electron microscope (TEM), N2 adsorption–desorption isotherms, UV–vis absorption spectra (UV–vis) and photoluminescence spectra (PL) were used to characterize the composite materials. The results indicate that a small amount of sub-nanometric ZnO clusters can be introduced into the channel of zeolite L, however, when the amount of ZnO loading exceeds 20wt%, macrocrystalline ZnO appears on the external surface of zeolite L. Different from bulk ZnO materials, these sub-nanometric ZnO clusters exhibit their absorption onset below 255nm and a blue luminescence band in the range of 404–422nm. The temperature-dependent luminescence demonstrates that the amount of the ZnO loading significantly affects the exciton–phonon interaction between the ZnO clusters and the zeolite host. The ZnO clusters exhibit a picosecond scale emission lifetime at room temperature.