The effects of areca catechu L extract on anti-aging

The anti-aging effects of Areca catechu L extract (CC-516) on skin were investigate both in vitro and in vivo. The CC-516 has a high proportion of proline (13%) of free amino acid content. The inhibitory effect of CC-516 on the elastase exhibited 37 to 90% inhibition by 10 to 250 mug/ml concentration; the IC _ 50 values with 40.8 mug/ml for porcine pancreatic elastase (PPE) and 48.1 mug/ml for human leukocyte elastase (HLE), respectively. One of the effects of elastase is that it is known to reduce the number of elastin fibers at the level of the enzyme deposition. The number of elastin fibers was increased when we drift from the deposit number of elastase with 100 mg/ml of CC-516. CC-516 showed protection of elastic fiber against degradation by the enzyme in an ex vivo assay. The CC-516 increased proliferation of human fibroblast cell by 85% at 10 ; -4 concentration, compared with control, whereas the increase by ascorbic acid was 50%. The collagen synthesis was increased by 40% at 10 ; -4% concentration of CC-516. The treatment with CC-516 improved skin hydration, the skin elasticity, and skin wrinkles. From this study, we suggest that CC-516 can be used as a new anti-aging component for cosmetics.     

Dynamic prediction models for alkaloid content using NIR technology for the study and online analysis of parching in Areca Seed

The goal of this research was to develop dynamic prediction models for contents of arecoline, arecaidine and guvacine by NIR for the study and online analysis of the parching process in Areca Seed (AS). Twenty types of AS were selected from 60 types obtained from various places and were then parched. With partial least squares (PLS), calibration models were generated based on Multiplicative Scatter Calibration (MSC) for guvacine and arecoline and First Derivative + MSC for arecaidine. The root mean square errors of cross-validation (RMSECV) for arecoline, arecaidine and guvacine were 0.141, 0.0822 and 0.181 mg/g, respectively; the root mean square errors of prediction (RMSEP) were 0.224, 0.0897 and 0.187 mg/g, respectively; the correlation coefficients (R) were 0.9813, 0.9658 and 0.9831, respectively. Furthermore, the time–temperature-content-drug efficacy law was analyzed, and some new technology and methods were used in online analysis and quality control.     

Investigation on the spinability of fine areca fiber

Betel nut is one of the important fruits cultivated in tropical parts of the world. It generates a huge quantity of husk, which is a source of areca fiber. Both fine and coarse fibers are available in the husk. Different properties of fine areca fiber have been analyzed for qualifying its ability to convert into spun yarn. Fine areca fiber has good physical properties in terms of length, water absorption, maturity which makes it suitable for spinning. However, in case of strength and fineness it showed ordinary value compared to cotton fiber. Areca/cotton 50:50 blend 48 tex ring and rotor yarn has been produced and yarns showed tenacity 7.1cN/tex and 6.88 cN/tex accompanied by 6.81% and 6.35% elongation, respectively. The water absorption of areca/cotton blend yarn showed 4.8 times higher value than 100% cotton yarn.     

基于多级错流提取槟榔生物碱的工艺优化

为了优化槟榔生物碱的提取工艺,以青果槟榔壳为原料,采用多种溶剂体系进行提取,确定最佳提取溶剂;根据多级错流浸取理论公式设计料液比和浸取级数,在单因素试验的基础上,以提取温度、提取时间、溶剂pH值为自变量,以槟榔生物碱提取率为指标,进行有交互的正交试验。结果表明:以水为提取剂,料液比1:20(m:V),提取温度60℃,提取时间100min,pH值为2,提取2次,该条件下的槟榔生物碱提取率为7.241 7mg/g。     

食用槟榔的加工工艺研究

通过对槟榔的传统制作工艺的研究，在保留传统工艺的基础上，应用现代科技，研究工业化生产食用槟榔的生产工艺。系统地解决了槟榔去烟垢、苯并芘及槟榔碱的控制、炮制入味等技术难题。     

The use of natural Areca catechu dyes for silk and nylon and its halochromic effect

Abstract

In this study, we have investigated the use of betel nut (Areca catechu) extract solution as a natural dye for the use of dyeing for silk and nylon. Chemical structure of betel nut extracted solution was confirmed by using FTIR and ¹H NMR spectroscopy and thermal properties also measured for determining the proper dyeing temperature. In order to optimise the colouration properties, variable dyeing parameters (temp, pH and mordant type) was studied. The halochromic effect of synthesised natural dye was analysed by using UV–Vis spectroscopy. Additionally dye build-up, colour fastness properties of both fabrics were compared.     

高效液相色谱法测定槟榔中阿斯巴甜的含量

目的建立高效液相色谱法检测槟榔中阿斯巴甜的含量的分析方法。方法槟榔去除卤水及内层纤维后,以磷酸-水溶液(pH=2)为提取液、采用超声法提取槟榔中阿斯巴甜。提取液经Agilent ZORBAX SB-C_(18)(4.6 mm×250 mm,5μm)色谱柱分离,以乙腈-10 mmol/L KH2PO4水溶液(pH=3.5)(14:86,V:V)为流动相,流速为1 mL/min,采用紫外检测器在210 nm检测波长下对阿斯巴甜含量进行测定。结果阿斯巴甜在4.444~222.2μg/mL范围内呈现良好的线性关系,检出限为0.22μg/mL,精密度为0.17%,在3个加标水平下的平均回收率为99.80%。结论本提取方法易于操作、提取率高且稳定性良好,可用于槟榔中阿斯巴甜的提取;本检测方法具有线性范围广、灵敏度高、快速、准确等优点,适用于槟榔中阿斯巴甜的含量测定。     

响应面分析法优化超声波提取槟榔原花青素工艺

利用响应面分析法(RSM)对槟榔原花青素的提取工艺进行优化。在单因素试验基础上选取试验因素与水平,根据中心组合(Box-Behnken)试验设计原理采用四因素三水平的响应面分析法对各个因素的显著性和交互作用进行分析,结果表明：槟榔干原花青素提取的最佳工艺条件为超声功率600W、超声时间16min、料液比1:40(g/mL)、丙酮体积分数81%,在此条件下,测定花青素提取率最高达到3.41%。     

槟榔蒂水提物对3种食用菌菌丝体品质及抗氧化活性的影响

目的:再利用槟榔副产物——槟榔蒂,并提高食用菌菌丝体品质。方法:以平菇、榆黄蘑、金针菇为供试菌种,以菌丝长速、生物量、菌丝体活性成分含量、抗氧化活性为指标,研究槟榔蒂水提物对3种菌菌丝体品质以及菌种生长代谢相关酶活性和变化趋势的影响。结果:槟榔蒂水提物添加量为6.4 mg/mL时,平菇生长效果最好,添加量为4.8 mg/mL时,榆黄蘑、金针菇生长效果最好;与对照组相比,添加4.8～6.4 mg/mL槟榔蒂水提物时,菌丝体活性成分含量显著提高,其中平菇、榆黄蘑、金针菇菌丝体三萜含量分别提高95.24%,70.91%,75.00%;槟榔蒂水提物提高了菌丝体抗氧化活性,菌丝体抗氧化活性由大到小依次为榆黄蘑>金针菇>平菇;槟榔蒂水提物在一定程度上提高了3种菌的淀粉酶、纤维素酶、木聚糖酶、漆酶活性,但对酶活性变化趋势的影响不显著。结论:添加适量槟榔蒂水提物可有效提高3种食用菌的菌丝体品质和抗氧化活性。     

Influence of chemical treatment on tensile strength,water absorption,surface morphology,and thermal analysis of areca sheath fibers

Proper surface modification is highly essential to improve compatibility of natural fibers with polymer matrix to develop eco-friendly materials. In the present work, an attempt has been made to study the effect of various chemical treatments such as alkaline, acrylic acid, permanganate, sodium chlorite, and benzoylation on areca sheath fiber. After surface modifications, its density, water absorption property, mechanical property, thermal gravimetry analysis (TGA), Fourier transform infrared spectroscopy (FTIR), and surface morphology have been thoroughly investigated. It has been observed that benzoyl chloride-treated fiber gives better performance in comparison to other treatments.