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Effect of processing on bioaccessibility and bioavailability of bioactive compounds in coffee beans

Food Bioscience 2022年第2期46卷 1-13页

作者： Hanjing Wu Jingyu Gu Amrit BK Malik A.Nawaz colin J.barrow Frank R.Dunshea Hafiz A.R.Suleria School of Agriculture and Food Faculty of Veterinary and Agricultural SciencesThe University of MelbourneParkville3010VICAustralia Commonwealth Scientific and Industrial Research Organisation(CSIRO) Agriculture and Food671 Sneydes RoadPrivate Bag 16WerribeeVictoria3030Australia Centre for Chemistry and Biotechnology School of Life and Environmental SciencesDeakin UniversityWaurn PondsVIC3217Australia Faculty of Biological Sciences The University of LeedsLeedsLS29JTUK

Coffee is one of the most prevalent and functional beverages around world owing to its rich content of bioactive *** compounds and alkaloids are two primary groups of bioactive compounds in coffee beans,which have been proven healthy benefits in regular and suitable daily *** have been recognized as protective factors,especially phenolic compounds,to perform high antioxidant capacities and potential to relieve the occurrence of chronic diseases and partial *** content and composition of bioactive and anti-nutritional compounds in coffee beans can be mainly influenced by variety,processing and storage *** cultivar of Arabica coffee beans(***)exhibits lower content of phenolic compounds but similar anti-nutritional substances with the comparison to Robusta(***).Comparing to green coffee beans,reasonable roasting contributes to the improvement of phenolic content and its total antioxidant activity because of the liberation of bound phenolic compounds and the generation of novel compounds with antioxidant *** intensive roasting will not only decrease the number of bioactive compounds within the coffee beans but also stimulate the generation of endogenous anti-nutritional compounds,which consequently reduce the coffee nutritional *** fluctuations of moisture content during storage would be the primary reason of the changes in the content of bioactive *** compounds in coffee beans perform outstanding bioaccessibility but relatively lower absorption efficiency because of the combination with other *** roasting would improve the bioavailability of bioactive *** interaction between phenolic compounds and proteins would also influence the bioavailability and bioactivity of bioactive compounds and final nutritional value after consumption.

关键词： Coffee beans Phenolic compounds Alkaloids Anti-nutritional compounds Roasting Bioavailability

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Screening of phenolic compounds in australian grown grapes and their potential antioxidant activities

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Food Bioscience 2022年第3期47卷 544-556页

作者： Gia Toan Vo Ziyao Liu Osbert Chou Biming Zhong colin J.barrow Frank R.Dunshea Hafiz A.R.Suleria School of Agriculture and Food Faculty of Veterinary and Agricultural SciencesThe University of MelbourneParkvilleVIC3010Australia CAS Key Laboratory of Quantitative Engineering Biology Synthetic Biochemistry CenterShenzhen Institute of Synthetic BiologyShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China Centre for Chemistry and Biotechnology School of Life and Environmental SciencesDeakin UniversityWaurn PondsVIC3217Australia Faculty of Biological Sciences The University of LeedsLeedsLS2 9JTUK

Grapes(Vitis Vinifera)are one of the world's most utilised and prized *** are a great source of antioxidants due to the abundance of phenolic *** pulp is the main part of the grape being *** pulp of five Australian grown grapes–Dawn Seedless(DS),Calmeria(CG),Golden Globe(GG),Menindee Seedless(MS),and Thompson Seedless(TS)will be qualitatively and quantitatively analysed for its phenolic composition and antioxidant *** general trend followed:GG>TS>MS>DS>CG,and the phenolic content of the pulp also presented a significant positive correlation with the antioxidant *** revealing the highest levels of TPC(4.31±0.11 mg GAE/g)and TFC(0.48±0.09 mg QE/g)while TS were highest in TTC(0.94±0.12 mg CE/g).Similarly,GG exhibited higher antioxidant capacity in DPPH(5.84±0.17 mg AAE/g),FRAP(4.91±0.14 mg AAE/g),and TAC(6.78±0.12 mg AAE/g),while TS revealed highest radical scavenging ability for ABTS(4.56±0.19 mg AAE/g).The LC-ESI-QTOF-MS/MS tentatively identified 78 phenolic compounds consisting of flavonoids(36),phenolic acids(31),lignans(3),stilbenes(1),and other polyphenols(7)in five grapes *** most abundant fruit-based targeted polyphenols were *** had a higher phenolic concentration in HPLC-PDA quantification,particularly for phenolic acids(gallic acid and chlorogenic acid)and flavonoids(kaempferol).Our study provides relatively adequate information on grape pulp's phenolic content and antioxidant capacity,providing confidence and research prospects to promote grape pulp use in different food,pharmaceutical and supplement industries,and even influencing grape cultivation.

关键词： Australian grown grapes Phenolic compounds LC-ESI-QTOF-MS/MS Antioxidant activity HPLC-PDA

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A Comparative Analysis of Four Kinds of Polysaccharides Purified from Furcellaria lumbricalis

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Journal of Ocean University of China 2007年第1期6卷 16-20页

作者： barrow colin Ocean Nutrition Canada Ltd. Dartmouth Nova Scotia B2Y 4T6 Canada

Four kinds of polysaccharides (FA, FB, FC and FD) were extracted and purified from a red alga Furcellaria lumbri-calis. Their monosaccharide composition, average molecular mass (Mw) and structural feature were determined by gas chromatog-raphy (GC), high performance gel permeation chromatography (HPGPC) and Fourier transform infrared spectroscopy (FTIR), respectively. The results showed that FA and FB were composed of galactose (Gal), 3,6-anhydro-galactose (AnG) and 4-sulfated-galactose (G4S), which were structurally similar to β-carrageenan and κ-carrageenan. FC was composed of sulfated galactose and small amount of AnG, indicating that it was a hybrid-sulfated galactan. FD was composed of α-1, 4-glucose and belonged to floridean starch. The respective yields of FA, FB, FC and FD were 4.84%,33.74%,8.76% and 13.5%, and the cor-responding Mw were 537 kD, 432 kD, 513 kD and 51 kD respectively. Owning to its high content ( >60%) of polysaccharide, F. lumbricalis will be a good source of marine sulfated polysaccharide and shows its potential utilization in food and medicine.

关键词： Furcellaria lumbricalis sulfated galactan carrageenan floridean starch

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Development of a novel myconanomining approach for the recovery of agriculturally important elements from jarosite waste

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Journal of Environmental Sciences 2018年第5期30卷 356-367页

作者： Ankita Bedi Braj Raj Singh Sunil K.Deshmukh Nisha Aggarwal colin J.barrow Alok Adholeya TERI–Deakin Nanobiotechnology Centre Biotechnology and Management of Bioresources Division The Energy and Resources Institute(TERI) School of Life and Environmental Sciences Deakin University Sri Aurobindo College Department of Chemistry University of Delhi

In this study, an ecofriendly and economically viable waste management approach have been attempted towards the biosynthesis of agriculturally important nanoparticles from jarosite waste. Aspergillus terreus strain J4 isolated from jarosite（waste from Debari Zinc Smelter,Udaipur, India）, showed good leaching efficiency along with nanoparticles（NPs） formation under ambient conditions. Fourier-transform infrared spectroscopy（FT-IR） and transmission electron microscopy（TEM） confirmed the formation of NPs. Energy dispersive X-ray spectroscopy（EDX analysis） showed strong signals for zinc, iron, calcium and magnesium,with these materials being leached out. TEM analysis and high resolution transmission electron microscopy（HRTEM） showed semi-quasi spherical particles having average size of 10‐50 nm. Thus, a novel biomethodology was developed using fungal cell-free extract for bioleaching and subsequently nanoconversion of the waste materials into nanostructured form. These biosynthesized nanoparticles were tested for their efficacy on seed emergence activity of wheat（Triticum aestivum） seeds and showed enhanced growth at concentration of 20 ppm. These nanomaterials are expected to enhance plant growth properties and being targeted as additives in soil fertility and crop productivity enhancement.

关键词： Bioleaching Fourier transform infraredspectroscopy (FTIR) Transmission electronmicroscopy (TEM) JarositeNanoparticles Seed-emergence activity

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Bioaccessibility and bioavailability changes of phenolic compounds in pumpkins (Cucurbita moschata):A review

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Food Bioscience 2022年第3期47卷 161-175页

作者： Zihong Yang Amrit BK Wanrong Zhao Linghong Shi Hanjing Wu colin barrow Frank Dunshea Hafiz A.R.Suleria School of Agriculture and Food Faculty of Veterinary and Agricultural SciencesThe University of MelbourneParkvilleVIC3010Australia Ezy Chef Pty Ltd BroadmeadowsVIC3047Australia Centre for Chemistry and Biotechnology School of Life and Environmental SciencesDeakin UniversityWaurn PondsVIC3217Australia Faculty of Biological Sciences The University of LeedsLeedsUK

Pumpkin (Cucurbita moschata ) is one of the well-known edible plants that contains several phytoconstituents,including *** properties of medicinal values in pumpkin have been demonstrated,such as anti-diabetic,antioxidant,anti-carcinogenic,anti-inflammatory,hypolipidemic,and *** functional compounds in pumpkins and the secondary metabolites in plants,the positive effects of polyphenols have been studied,including high antioxidant capacities and the mitigation potential of chronic diseases and certain *** review is proposed to comprehensively investigate the interactions between phenolic compounds and pumpkin matrix constituents,including carbohydrates,proteins,lipids,minerals,vitamins,and other polyphenols,which will significantly impact the bioaccessibility and bioavailability of bioactive compounds in pumpkins,especially ***,the effect on the nutritional properties of bioactive compounds has also been ***,this review includes the assessments for the food processing strategies to demonstrate the impact on phenolic intake capacity and changes in the content and properties of active compounds.

关键词： Bioaccessibility Bioavailability Phenolic compound Food matrix Matrix interaction

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荧光光谱法研究蒜头果蛋白与金属离子的相互作用

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光谱学与光谱分析 2014年第12期34卷 3297-3300页

作者：袁燕张薇戴建辉刘晓芳王红斌 colin J barrow 杨文荣云南民族大学民族药资源化学国家民委-教育部重点实验室云南昆明650500 Center for Chemistry and Biotechnology School of Life and Environmental SciencesDeakin UniversityGeelongVIC 3216Australia

蒜头果蛋白(malanin)是从云南、广西特有植物蒜头果中分离纯化出的一种新的、具有抗肿瘤活性的糖蛋白。用荧光光谱法研究了Cu2+,Ag+和Ca2+对malanin和apo-malanin溶液(经EDTA透析脱去金属离子后的脱金属蛋白)荧光强度的影响。结果表明,C... 详细信息

蒜头果蛋白(malanin)是从云南、广西特有植物蒜头果中分离纯化出的一种新的、具有抗肿瘤活性的糖蛋白。用荧光光谱法研究了Cu2+,Ag+和Ca2+对malanin和apo-malanin溶液(经EDTA透析脱去金属离子后的脱金属蛋白)荧光强度的影响。结果表明,Cu2+对malanin和apo-malanin荧光均有明显的静态猝灭现象,其离解常数Kd分别为2.37×10-4和2.66×10-4 mol·L-1;Ag+对malanin的荧光强度变化不大,但对apo-malanin荧光强度却有明显的静态猝灭现象,其离解常数Kd为2.37×10-4 mol·L-1;而Ca2+对malanin和apo-malanin荧光强度均无明显变化,说明Ca2+对维持malanin分子天然构象具有重要作用。

关键词：荧光光谱蒜头果蛋白金属离子荧光猝灭

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Preparation and Bioactivity Evaluation of Low Molecular Weight Polysaccharides and Oligosaccharides from PEI Furcellaria lumbricalis

Preparation and Bioactivity Evaluation of Low Molecular Weig...

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中国资源生物技术与糖工程学术研讨会

作者： Christa Tiller Gabrielle Girouard Stephen Ewart colin barrow Ocean Nutrition CanadaLid Halifax Nova ScotiaB3J IS5Canada Ocean Nutrition CanadaLid Halifax Nova ScotiaB3J IS5Canada Ocean Nutrition CanadaLid Halifax Nova ScotiaB3J IS5Canada Ocean Nutrition CanadaLid Halifax Nova ScotiaB3J IS5Canada

＜正＞The red alga, Furcellaria lumbricalis from coast of Princess Edward Island （PEI） in Atlantic Canada, was extracted with hot water and then separated by 0.2 mol/L KC1 into two types of polysaccharides （KCA and LCA）. The polysaccharide of KCA is a hybrid polymer and mainly consisted of 3,6-anhydrogalactose and sulfated galactose derivates, while LCA mainly consists of 4-sulfo-galactose and 2-sulfo-3,6-anhydrogalactose based on IR and monosaccharide composition analysis. The purified polysaccharides were depolymerized by mild inorganic acid, and separated on Superdex30 and BioGel-P6 columns. Twenty-five low molecular weight polysaccharide or oligosaccharides fractions were obtained, and their molecular mass was determined by HPGPC. The two polysaccharides *** low molecular weight analogs or oligosaccharides were screened through a number of in vitro bioassays for antioxidant, antidiabetic, antihypertension, anticoagulation/antithrombotic, anti inflammation, anti-Alzheimer’s disease, and the immune stimulation activities. No significant activities were found in the limited assays we used for screening, however, some polysaccharides and oligosaccharides showed considerable -effects in immune stimulation and anticoagulation/antithrombotic assays. A focused in vitro assaying and animal tests are required to further evaluate the potential value of commercialization in these applications.

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在家创业应有的姿势

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作者： (英)科林·巴罗(colin barrow)

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蒜头果蛋白对人白血病K562细胞体外生长的抑制作用

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食品工业科技 2014年第20期35卷 379-382页

作者：袁燕张薇李彬王红斌 colin J.barrow 杨文荣云南民族大学民族药资源化学国家民委-教育部重点实验室云南昆明650500 澳大利亚迪肯大学生命与环境科学学院化学与生物技术中心澳大利亚吉朗3216

从蒜头果种子中提取蒜头果蛋白并测定其对人白血病K562细胞体外生长的抑制作用。结果表明,蒜头果蛋白具有明显抑制K562细胞体外增殖的作用,且存在时间和剂量依赖性,其半数抑制浓度IC50值为1.58×10-8mol·L-1。蒜头果蛋白与顺铂联用表... 详细信息

从蒜头果种子中提取蒜头果蛋白并测定其对人白血病K562细胞体外生长的抑制作用。结果表明,蒜头果蛋白具有明显抑制K562细胞体外增殖的作用,且存在时间和剂量依赖性,其半数抑制浓度IC50值为1.58×10-8mol·L-1。蒜头果蛋白与顺铂联用表现出了明显的协同抑制效应,两药联用效应会增加。此外,蒜头果蛋白的热稳定性较好,非常便于贮存。本文为蒜头果蛋白在肿瘤治疗方面的开发利用提供依据和思路,也为该蛋白作为新药的研发奠定基础。

关键词：蒜头果蛋白人白血病K562细胞抗肿瘤活性

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一种高分支度葡聚糖的提取分离及其结构研究

一种高分支度葡聚糖的提取分离及其结构研究

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中国药学会全国多糖类药物研究与应用研讨会

作者：杨波于广利赵峡李晓军 Junzeng Zhang colin barrow 中国海洋大学医药学院糖科学与糖工程实验室 National Research Council canada Institute for Nutrisciences and Health Ocean Nutrition Canada Ltd.Halifax.Nova Scotia.B3J 1S5.Canada

目的从蠕虫叉红藻（Furcellaria Lumbricalis）中分离纯化葡聚糖并确定其一级结构。方法藻粉经乙醇脱脂后采用热水提取工艺,经CTAB去除硫酸多糖后,从中获得粗多糖FS。进一步通过离子交换柱层析,凝胶渗透柱层析分离纯化出1种均一多糖FSP... 详细信息

目的从蠕虫叉红藻（Furcellaria Lumbricalis）中分离纯化葡聚糖并确定其一级结构。方法藻粉经乙醇脱脂后采用热水提取工艺,经CTAB去除硫酸多糖后,从中获得粗多糖FS。进一步通过离子交换柱层析,凝胶渗透柱层析分离纯化出1种均一多糖FSP1。运用酸法全水解、α-淀粉酶水解、高效薄层层析（HPTLC）、高碘酸氧化、Smith降解、甲基化反应和等生化方法,以及红外光谱（IR）、质谱（MS）、气质联用（GC-MS）以及核磁共振波谱（NMR）等仪器分析方法,对FSP1糖残基组成及主链的分支情况等进行了结构表征。结果蠕虫叉红藻中FSP1含量占总多糖的6.7%,它是一种不含有糖醛酸和硫酸根的葡聚糖,分子量为50 kD。经甲基化分析,高碘酸氧化和Smith降解表明其主链是→4Glc1→型为主葡聚糖,并在主链的C2和C4以及C6位均有不同程度的分支点,4种键型摩尔比为16:11:2:2。通过NMR分析表明,该多糖主要是α构型,结构不同于一般的红藻淀粉,是目前从红藻中发现的一种分子量和分支度较高的葡聚糖。结论蠕虫叉红藻中含有高度分支度结构的葡聚糖,该结构是海洋褐藻和红藻中少见的结构,其进一步的理化特性和生物活性正在研究中。

关键词：蠕虫叉红藻高分支度葡聚糖分离纯化结构鉴定

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