Article
Chemistry, Applied
Haibo Lan, Claudia Nunes, Guido R. Lopes, Kai Wang, Lei Zhao, Manuel A. Coimbra, Zhuoyan Hu
Summary: The polysaccharides found in longan pulp have immunomodulatory effects, affecting the production of various immune response factors and inhibiting inflammatory responses. Different responses were observed depending on the molecular weight of the glucans, suggesting a potential role in immune regulatory pathways.
CARBOHYDRATE POLYMERS
(2021)
Article
Chemistry, Applied
Kanokwan Tandee, Sila Kittiwachana, Sugunya Mahatheeranont
Summary: The study found that incorporating dried longan seeds into longan wine significantly increased its antioxidant activities. Different yeast strains had varying degrees of antioxidant activities, while fermentation temperature and initial soluble solids had little effect on inhibiting reactive species. Dominant volatile compounds affected the antioxidant activities of longan wine produced with seeds.
Article
Food Science & Technology
Ya-Hui Yu, Li Wang, Qiang Zhang, Xiao-Nan Zhang, Xin-Huai Zhao
Summary: Chemical selenylation of longan polysaccharides resulted in significant changes in their saccharide features and enhanced their anti-cancer activity against colon carcinoma cells.
CURRENT RESEARCH IN FOOD SCIENCE
(2022)
Article
Plant Sciences
Jing Wang, Ji Chen, Shilian Huang, Dongmei Han, Jianguang Li, Dongliang Guo
Summary: In this study, we investigated the transcriptomic changes in longan reciprocal pollination combinations showing unilateral cross incompatibility (UCI). Our results revealed differential regulation of genes associated with jasmonic acid biosynthesis and signaling, pollen tube growth, cell wall modification, starch and sucrose biosynthesis, and protein processing in endoplasmic reticulum pathways between the two combinations.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Yuling Lin, Yan Chen, Youjing Zeng, Shuting Zhang, Zihao Zhang, YuKun Chen, Jiawei Gong, Zhongxiong Lai
Summary: A genome-wide analysis of longan miRNA genes was conducted, and 80 miRNA precursors (pre-miRNA) were predicted. Full-length cDNA sequences of 13 longan primary miRNAs (pri-miRNAs) were amplified by RLM-RACE and SMART-RACE, revealing multiple transcription start sites (TSSs) and polymorphic downstream pre-miRNAs. Analysis of the longan miRNA gene promoter elements indicated the presence of light-responsive, stress-responsive, and hormone-responsive elements. Quantitative real-time PCR assay elucidated potential spatial and temporal expression patterns of longan pre-miRNAs during somatic embryogenesis and in different longan organs/tissues.
Article
Biochemistry & Molecular Biology
Saquib Waheed, Fan Liang, Mengyuan Zhang, Dayi He, Lihui Zeng
Summary: This study compared differentially expressed miRNAs (DEmiRNAs) and their target genes between a continuous flowering cultivar and a unique cultivar that only blossoms once. The study identified several miRNAs and target genes associated with the continuous flowering trait, as well as critical regulatory pathways and flowering-related genes. Furthermore, the study discovered miRNAs that may play vital roles in flower regulation in longan.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Food Science & Technology
Yuanyuan Deng, Chunxiang Lai, Yan Zhang, Pengfei Zhou, Guang Liu, Xiaojun Tang, Ping Li, Zhihao Zhao, Mingwei Zhang, Zhencheng Wei
Summary: Several pretreatment methods, including sodium chloride steeping, hot blanching, and freeze-thawing, were used to improve the physicochemical properties of dried longan pulps. The results showed that these methods reduced moisture content, increased hardness, and decreased browning in dried longan pulps. Ultrasound and microwave pretreatment methods increased phenolic contents and antioxidant capacity. The use of hot blanching before hot air drying was recommended to improve efficiency and quality.
JOURNAL OF FOOD SCIENCE
(2023)
Article
Plant Sciences
Mengjie Tang, Xiaoli Gao, Wenyong Meng, Jindi Lin, Guanghui Zhao, Zhongxiong Lai, Yuling Lin, Yukun Chen
Summary: In this study, 15 longan NF-YB (DlNF-YB) family genes were identified and analyzed. The results suggest that DlNF-YB may play an important role in longan embryonic development and participate in complex plant hormone signaling pathways.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Plant Sciences
Fan Liang, Yiyong Zhang, Xiaodan Wang, Shuo Yang, Ting Fang, Shaoquan Zheng, Lihui Zeng
Summary: This study analyzed the molecular mechanisms of floral induction in longan using transcriptome sequencing. The results showed the significance of starch and sucrose metabolic, circadian rhythms, and plant hormone signal transduction pathways in floral induction. The analysis of weighted gene co-expression network and expression pattern provided insights into the specific transcriptional characteristics and co-expressed gene regulatory network during floral induction. Key DEmRNAs and DElncRNAs were identified. A hypothetical model of regulatory pathways and key genes and lncRNAs during floral bud induction in longan was proposed.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Multidisciplinary Sciences
Preaploy Hong-in, Waranya Neimkhum, Chanun Punyoyai, Suwannee Sriyab, Wantida Chaiyana
Summary: This study compared the chemical compositions and biological activities of conventional dried Dimocarpus longan with black D. longan that underwent thermal ageing. The results showed that black D. longan contained more biologically active compounds and possessed more potent biological activities.
SCIENTIFIC REPORTS
(2021)
Article
Food Science & Technology
Kanyasiri Rakariyatham, Dayong Zhou, Ting Lu, Fawen Yin, Zhuoliang Yu, Deyang Li, Yan Shen, Beiwei Zhu
Summary: A combination of longan peel extract, vitamin E, and ascorbyl palmitate showed synergistic effects against lipid oxidation in refined tuna oil, significantly increasing induction period and decreasing peroxide value, conjugated dienes, and thiobarbituric acid reactive substances. This combination also maintained levels of polyunsaturated fatty acids comparable to a synthetic antioxidant and resulted in a synergistic decrease of free radicals in the oil, enhancing the protective effects against lipid oxidation.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2021)
Article
Food Science & Technology
Yanfei Wu, Lihong Xie, Zhiwei Li, Taotao Li, Yueming Jiang
Summary: Valeric acid, an HDAC inhibitor, was found to suppress longan aril breakdown during postharvest storage. The treatment enhanced the antioxidant capacity of fruit and regulated the expressions of HDACs.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Horticulture
Tao Luo, Liang Shuai, Tingting Lai, Lingyan Liao, Jing Li, Zhenhua Duan, Xiaoqing Xue, Dongmei Han, Zhenxian Wu
Summary: The on-tree preservation of longan fruits may lead to reduced sugar content, sweetness, and quality due to a rapid conversion of sucrose to hexose and consumption of hexose in the pulp. Research suggests that the up-regulated glycolysis, fermentation, TCA, and energy metabolism pathways may promote sucrose decomposition and sugar receding in longan pulp.
SCIENTIA HORTICULTURAE
(2021)
Article
Multidisciplinary Sciences
Preaploy Hong-in, Wantida Chaiyana
Summary: This study evaluated the biological activities of black Dimocarpus longan Lour. seed extracts and successfully developed a lamellar liquid crystal (LLC) formulation. The ethyl acetate extract exhibited the strongest inhibitory activities against matrix metalloproteinase-1 and hyaluronidase. Gallic acid was identified as the main compound responsible for the biological activities of the extract. The LLC formulation containing the extract showed good stability and crystallinity.
SCIENTIFIC REPORTS
(2022)
Article
Pharmacology & Pharmacy
Haibo Lan, Wu Li, Jucai Xu, Yuzhe Yang, Zhaolun Tan, Ruili Yang
Summary: LP4, a novel immunomodulatory polysaccharide with a molecular weight of 6.31 x 10(4) g/mol, was extracted from fresh longan pulp. It can activate macrophages mainly through the TLR2 and TLR4-induced PI3K/AKT and MyD88/TRAF6 pathways, leading to increased cytokine production.
FRONTIERS IN PHARMACOLOGY
(2021)
