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为了对比不同油体富集物理化性质及功能性质的差异，采用水萃离心法从大豆、花生、葵花籽3种大宗油料种子中提取油体富集物，对比研究了油体富集物的得率、基本成分、粒径、Zeta电位、蛋白质组成、黏度、起泡性、乳化性、分层稳定性以及冻融稳定性。结果表明：大豆油体富集物的得率和固形物含量都显著低于葵花籽和花生油体富集物的（p＜0.05），且具有不易掩盖的豆腥味；3种油体富集物的基本成分之间都存在显著性差异（p＜0.05），蛋白质的分子质量分布也不尽相同；3种油体富集物的粒径和Zeta电位绝对值由小到大顺序均为大豆油体富集物

[Objective] Exploring the changes and ecological effects of the ecological land in the desert oasis area can provide a decision-making reference for the ecological protection and high-quality development of the Yellow River Basin. [Methods] Taking Yinchuan City, a desert oasis in the upper reaches of the Yellow River, as an example, this study put forward the coefficient revision method of ecological service value (ESV) equivalent factors, established the relationship of ESV equivalent factor coefficients between Yinchuan City and China nationwide, and analyzed the response characteristics of ESV to the spatial and temporal changes of production-living-ecological land. [Results] The results show that: (1) The proportion of ecological land was the highest among the production-living-ecological land in Yinchuan City, but this proportion decreased during the study period, from 69.49% in 1990 to 57.68% in 2020. During the same period, the production land increased steadily, from 28.54% to 32.52%, and the living land expanded rapidly, from 2.37% to 9.81%. The dynamic degree of living land changed dramatically, but the dynamic degree trends of production land and ecological land gradually became smooth. (2) During the study period, the total amount of ESV increased by 384.2365 million yuan, and the positive effect of ecological land quality improvement on ESV was greater than the negative effect of the expansion of production land and living land on ESV. The contribution of regulating services to ESV was the largest and continued to increase, with the proportion increasing from 82.29% in 1990 to 83.76% in 2020, but the proportion of other services had decreased. The negative supply services are mainly related to the increase of water-consuming crop planting. (3) Urban expansion, energy base construction, and migration into the city are important reasons for the decline in ESV, resulting in lower ESV in the urban area, the Ningdong energy base, and key immigration areas; ecological construction is the main reason for the increase in ESV, with significant increases in areas such as the Bailitan Nature Reserve, the core area of the Yellow River Ecological Belt, and the grape production corridor at the eastern foot of the Helan Mountains. [Conclusion] In future development, it is necessary to improve the efficiency of living land and production land use to reduce the pressure of their expansion on ecological land, and to continuously improve the quality of ecological land to promote the healthy and sustainable development of the desert oasis ecosystem.

为了探究葵花籽油体富集物在冰淇淋中应用的可行性，以葵花籽油体富集物作为脂肪来源制备低脂冰淇淋，在无均质条件下研究葵花籽油体富集物添加量对低脂冰淇淋浆料和产品品质的影响。结果表明：冰淇淋浆料的黏度、储能模量和损耗模量都随葵花籽油体富集物添加量的增加而增大，当葵花籽油体富集物添加量为3.5%～4.0%时黏度与对照组相当；浆料中不易流动水和结合水的比例随着葵花籽油体富集物添加量的增加逐渐增大,在4.0%时达到最大；冰淇淋的膨胀率和抗融率随着葵花籽油体富集物添加量的增加先增大后减小；添加葵花籽油体富集物的冰淇淋色泽较差；冰淇淋的硬度和咀嚼性变化规律一致，都是随着葵花籽油体富集物添加量的增大呈现先减小后增大的趋势，弹性变化则相反;冰淇淋黏附性随着葵花籽油体富集物添加量的增加而升高；葵花籽油体富集物添加量为2.5%时冰淇淋感官评分最高。合适的葵花籽油体富集物添加量可以起到与棕榈油相似的效果，因此葵花籽油体富集物可以应用在冰淇淋中。In order to investigate the feasibility of using sunflower seed oil body enrichment in ice cream,low fat ice cream was prepared with sunflower seed oil body enrichment as the fat under the condition of non-homogenization. The effect of the dosage of the oil body enrichment on the quality of low fat ice cream slurry and product was explored. The results showed that the viscosity, storage modulus and loss modulus of ice cream slurry increased with the increase of the oil body enrichment dosage. When the dosage of oil body enrichment was 3.5%- 4.0%, the viscosity was equivalent to that of the control group. The proportion of non-flowing water and bound water in the slurry increased gradually with the increase of the dosage of oil body enrichment, reaching the maximum at 4.0%. The expansion rate and anti-melting rate of ice cream products first increased and then decreased as the increase of the oil body enrichment dosage. The color of ice cream with sunflower seed oil body enrichment was poor. The hardness and chewability of ice cream showed the same change law, which first decreased and then increased with the increase of the oil body enrichment dosage,while the elasticity changed in the opposite direction. The adhesion of ice cream increased with the increase of the oil body enrichment dosage. The sensory score of ice cream was the highest when the dosage of oil body enrichment was 2.5%. The appropriate dosage of sunflower seed oil body enrichment can produce a similar effect as palm oil, and sunflower seed oil body enrichment can be applied in ice cream.

ObjectiveThe objective of the study was to investigate whether the sequence of oocyte retrieval and salpingectomy for hydrosalpinx affects pregnancy outcomes of in vitro fertilization and embryo transfer (IVF-ET) patients.Study DesignThere were 1,610 bilateral hydrosalpinx patients who underwent laparoscopy salpingectomy and IVF-ET/intracytoplasmic sperm injection (ICSI) from January 2009 to December 2018. They were divided into two groups: oocyte retrieval first group: 235 accepted oocyte retrieval before salpingectomy; operation first group: 1,375 accepted oocyte retrieval after salpingectomy. The basic information and pregnancy outcomes of the two groups were compared. The pregnancy outcomes and influencing factors were analyzed among patients at different starting times of frozen-thawed embryo transfer (FET) or oocyte retrieval after the salpingectomy.ResultsPatients in the oocyte retrieval first group had higher levels of basal follicle stimulating hormone and lower anti-Mullerian hormone levels (P 0.05). The live birth rates of patients ≥35 years old in the operation first group and the oocyte retrieval first group were not significantly different (29.3% vs. 23.3%, P = 0.240). After adjusting for age and antral follicle count (AFC), oocyte retrieval 4–6 and 7–12 months after the operation had higher accumulated pregnancy rates [OR 1.439 (1.045–1.982), P = 0.026; OR 1.509 (1.055–2.158), P = 0.024] and higher accumulated live birth rates [OR 1.419 (1.018–1.977), P = 0.039; OR 1.544 (1.068–2.230), P = 0.021]. No significant difference was observed in the pregnancy outcomes of frozen embryo transfer at different times after salpingectomy (P > 0.05).ConclusionNo contamination of the embryo or infection was observed in patients who underwent oocyte retrieval before the operation. The interval between the operation and frozen embryo transfer did not affect the pregnancy outcomes. After adjusting for age and AFC, patients who underwent oocyte retrieval 4–6 and 7–12 months after the operation had higher accumulated pregnancy rates and live birth rates.