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Summary: Phenolic compounds (PCs) have been finding increasing applications in functional foods, cosmetic, pharmaceutical and nutraceuticals due to their nutritional and antioxidant properties. Considering the drawbacks of conventional extraction methods, there is an ongoing challenge for researchers to develop green extractions (GE) of PCs in a sustainable and eco‐friendly way. A bibliometric study is a valuable tool to provide quantitative information for evaluating the scientific research activity based on the available published scientific literature. This bibliometric study aims for the first time to unravel the scientific exploration towards the GE of phenolics from plant by‐products, that is, leaves by focussing on scientific publications collected through the Web of Science database. Consequently, insights into the evaluation of publication trends, authors, countries, organisations, keywords, journals, publishers and citations in support of GE were established. The critical evaluation of the results showed an increase in research, during the last decade, on GE of PCs from leaves. The study also revealed Europe as the leader in terms of publications, citations, countries, organisations, as well as authors contributing to this research topic. Following the analysis, directions for future research have also been suggested. [ABSTRACT FROM AUTHOR]

Background: Studies regarding the impact of Parkinson's disease (PD) on quality of life (QOL) have reported conflicting results, and the underlying QOL domains require further study. In order to understand the association between PD and QOL, we conducted this meta‐analysis to systematically compare QOL between PD patients and healthy controls. Method: The PubMed, PsycINFO, EMBASE, and Web of Science databases were systematically searched. Data were analyzed using the random‐effects model. Results: Twenty studies covering 2707 PD patients and 150,661 healthy controls were included in the study. Compared with healthy controls, PD patients had significantly poorer QOL overall and in most domains with moderate to large effects sizes. Different QOL measures varied in their association with quality of life, with the Parkinson's Disease Questionnaire‐39 (PDQ‐39) having the largest effect size (standard mean difference, SMD = −1.384, 95% CI: −1.607, −1.162, Z = 12.189, P < 0.001), followed by the Europe Quality of Life Questionnaire‐visual analogue scale (EQ‐VAS) (SMD = −1.081, 95% CI: −1.578, −0.584, Z = −4.265, P < 0.001), Europe Quality of Life Questionnaire‐5D (EQ‐5D) (SMD = −0.889, 95% CI: −1.181, −0.596, Z = −5.962, P < 0.001), and the Short‐form Health Survey (SF) scales (physical dimension: SMD = −0.826, 95% CI: −1.529, −0.123, Z = −2.303, P = 0.021; mental dimension: SMD = −0.376, 95% CI: −0.732, −0.019, Z = −2.064, P = 0.039). Conclusion: PD patients had lower QOL compared with healthy controls in most domains, especially in physical function and mental health. Considering the negative impact of poor QOL on daily life and functional outcomes, effective measures should be developed to improve QOL in this population. [ABSTRACT FROM AUTHOR]