Comparing the effects of three processing methods on the efficacy of mulberry leaf tea: Analysis of bioactive compounds, bioavailability and bioactivity

Bai, Huixin; Jiang, Wei; Yan, Ruonan; Wang, Fengyun; Jiao, Lixia; Duan, Linrui; Jia, Pu; Xie, Youhua; Wang, Siwang

doi:10.1016/j.foodchem.2022.134900

Cited by 4 publications

(4 citation statements)

References 42 publications

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“…The layout of the ports, their relative positions, and the distance between the top surface of the cavity and the conveyor belt are considered as variables for Microwave heating is widely used in food processing and agricultural product drying due to its rapid heating speed [9], strong penetrating ability, cleanliness, and hygiene [10,11]. The microwave method for fixing mulberry leaves can enhance fixation efficiency and prevent reddening of the leaves [12]. However, microwave reflection also occurs during microwave fixation, as the material absorbs microwaves [13], changing the energy transfer pathway and intensity.…”

Section: Geometric Modelingmentioning

confidence: 99%

Study on the Fixation of Mulberry Leaf Tea in a Multiport Microwave System

He,

Li,

Hou

et al. 2024

Processes

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Microwaves have the advantages of faster heating speed, shorter fixation time, and less pollution in tea fixation. However, there are few studies on the microwave fixation of mulberry leaf tea, which is not conducive to the promotion of mulberry leaf tea production. In order to study the fixation of mulberry leaf tea, the coaxial probe method is used to measure the dielectric constant of mulberry leaves, and the relationship connecting the real and imaginary parts of the dielectric constant and the moisture content is obtained through fitting. Based on this, a multiphysics model for mulberry leaf fixation in a six-port microwave cavity is established, which combines the characteristics of mulberry leaves, multiport heating, and mobile heating techniques. The impact of some important parameters, such as the layout and position of input ports and the thickness of mulberry leaves on the fixation process, are studied. The results show that the mutual energy coupling between ports can be reduced by using the noncoherent polarization of electromagnetic waves when the position of the ports in their working planes and the thickness of the mulberry leaves are set to (−0. 14 m, −0.15 m), (0.25 m, −0.15 m), (0.25 m, 0.15 m), (0.14 m, 0.15 m), (0.11 m, 0.0 m), (0.25 m, 0.15 m), (−0.14 m, 0.15 m), (0.11 m, 0.0 m), (0.11 m, 0.0 m), and 0.015 m when good fixation of mulberry leaves can be obtained. The study established a continuous microwave fixation experimental system for mulberry leaf tea. The experimental results indicate that the thickness of the tea affects its temperature uniformity in the microwave fixation system, which in turn affects the final quality of the tea. This study provides a reference for the industrialization of the microwave fixation of mulberry leaf tea.

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Section: Geometric Modelingmentioning

confidence: 99%

Study on the Fixation of Mulberry Leaf Tea in a Multiport Microwave System

He,

Li,

Hou

et al. 2024

Processes

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“…A hyperglycemia and hyperlipidemia model (Bai et al, 2023) was used to study the effects of different planting areas on the mulberry branch on apoptosis and antioxidant damage in vitro. Partial least square regression (PLSR) and multiple factor analysis (MFA) were used to analyze the effects of planting condition factors on the constituents and bioactivities of mulberry branch extracts.…”

Section: Introductionmentioning

confidence: 99%

“…The mulberry branch and mulberry leaf are similar in their compositional basis and bioactivities ( Bai et al., 2023 ), and the abundant yield of mulberry branches has obvious advantages for exploitation. However, there is no research that reveals the impact of the planting conditions of mulberry planting areas on the levels of the constituents of the mulberry branch.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, in this study, by determining fingerprint morphology and main constituent levels, the compositional similarity of mulberry branches from 12 planting areas in China was compared using the mulberry leaf as a control. A hyperglycemia and hyperlipidemia model ( Bai et al., 2023 ) was used to study the effects of different planting areas on the mulberry branch on apoptosis and antioxidant damage in vitro . Partial least square regression (PLSR) and multiple factor analysis (MFA) were used to analyze the effects of planting condition factors on the constituents and bioactivities of mulberry branch extracts.…”

Section: Introductionmentioning

confidence: 99%

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Planting conditions can enhance the bioactivity of mulberry by affecting its composition

Bai

Jiang²,

Liu³

et al. 2023

Front. Plant Sci.

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Mulberry (Morus alba L.) has a special significance in the history of agriculture and economic plant cultivation. Mulberry has strong environmental adaptability, a wide planting range, and abundant output. It is not only an important resource for silkworm breeding but also a raw ingredient for various foods and has great potential for the development of biological resources. The bioactivities of mulberry in different planting areas are not the same, which is an obstacle to the development of mulberry. This study collected information on the planting conditions of mulberry branches in 12 planting areas, such as altitude, temperature difference, and precipitation. A comparison of the levels of 12 constituents of mulberry branches from mulberry grown in different planting areas was then made. An in vitro model was used to study the bioactivities of mulberry branches in the 12 planting areas, and mathematical analysis was used to explain the possible reasons for the differences in the composition and bioactivities of mulberry branches in different planting areas. After studying mulberry samples from 12 planting areas in China, it was found that a small temperature difference could affect the antiapoptotic effect of mulberry branch on microvascular endothelial cells by changing the levels and proportions of rutin, hyperoside, and morusin. Adequate irrigation can promote the antioxidation of the mulberry branch on microvascular endothelial cells by changing the levels and proportions of scopoletin and quercitrin. The results of the analysis of planting conditions and the levels of active constituents and their correlation with bioactivities support the improvement of mulberry planting conditions and have great significance in the rational development of mulberry resources. This is the first time that a mathematical analysis method was used to analyze the effects of planting conditions on mulberry biological activity.

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