This article illustrates the research and development in the preparation methods of chitosan and low molecular-weight chitosan, introducing the specific methods and conditions for the preparation, and proposes a new research direction for preparing low-ash, high-purity active chitosan and its low molecular-weight chitosan.

  • 综述了壳聚糖及低聚壳聚糖制备方法的研究及进展,介绍了其具体的制备方法和条件,提出了制备低灰分、高纯度的活性壳聚糖和其低聚壳聚糖的研究方向;
  • 来源:互联网摘选更新时间:2026-07-14 03:53:12

  • 重点词汇
  • aart. 一(个);每一(个);任一(个),用于辅音音素开头的单词前
  • introducingv.提出( introduce的现在分词 );介绍;引进;作为…的开头;
  • researchn.研究,调查,探索;
  • theart.这个;指已提到或易领会到的人或事物;指独一无二的、正常的或不言而喻的人或事物;用以泛指;与形容词连用,指事物或统称的人;用于姓氏的复数形式前,指家庭或夫妇;(指特定用途的事物)足够,恰好;每,一;当前的,本,此;(重读,表示所指的为知名或重要的人或事物)
  • molecular-weight分子量
  • andconj. 和;与;而且;于是;然后
  • ofprep. 关于;属于…的;由…制成;
  • chitosann.壳聚糖;脱乙酰壳多糖;脱乙酰几丁质;聚氨基葡萄糖;
  • 相关例句
1、

Blue Lagoon - Oldeniz Beach Fethiye Turkey

土耳其Oldeniz海滩蓝色泻湖

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2、

an endless love to share my blue lagoon

这一段共涉蓝色礁湖的无尽缠绵

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3、

The doorman said he seen you at the Club Blue Lagoon.

该门卫说,他看到在俱乐部蓝礁湖你。

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4、

The Blue Lagoon is a mineral-rich seawater lake heated by lava.

蓝泻湖是一个由火山熔岩形成的咸水湖,富含矿物质。

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5、

00 pm. : On arrival at the blue lagoon you can go swimming, sunbathing and relax.

到达蓝色的礁湖,您可以在里面游泳,日光浴和放松;

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6、

The island's creamy blue lagoon is best appreciated from the air, where its contrast with surrounding waters is most apparent.

岛上的奶油蓝色泻湖是最好的赞赏从空中,其对比与周围的水域是最明显的。

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7、

The island has a mountainous, nearly impenetrable interior, white-sand beaches, and famous blue lagoon defined by an offshore coral reef.

岛上有连绵不断地山体,白色沙滩和由离岸珊瑚礁确立的著名蓝色泻湖。

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8、

On a deep blue lagoon, right next to the Magic Kingdom, sits the 15-floor contemporary resort.

紧挨着魔法王国的一个深蓝色的湖上,坐落着一个15层高的同时期的建筑。

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9、

On the deep blue lagoon right next to the magic kingdom sits the 15th floor contemporary resort.

在这个魔幻王国旁边湛蓝的礁湖上坐落这迪斯尼现代度假村的15层宾馆。

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10、

She said, 'Maybe you have postpartum; I think it's past the baby blues.' At Cindy's urging, Karen got therapy and medication, recovering quickly.

她说,'你可能是患上了产后抑郁症,我觉得不只是生宝宝后情绪不好。'在辛迪的督促下,卡伦接受了治疗并服了药,很快便康复了。

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11、

Voice 2: You may have heard a Spotlight program about the baby blues and postpartum depression before.

声音2:大家以前可能听过重点报道节目有关产后抑郁症的内容。

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12、

However, in terms of straight-up IQ, baby blues are your best bet for being brilliant.

然而,在智力方面,蓝眼睛是你想要变得卓越的最佳选择。

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13、

Voice 2: If you are a new mother suffering from the baby blues or postpartum depression you should know that you are not alone.

声音2:如果你是患有产后情绪低落或产后抑郁症的新妈妈,你应该知道你并不是一个人。

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14、

In another, a team adds Chinese subtitles to a movie that Blued produced in Thailand.

另一个角落里,一个团队正给Blued在泰国制作的一部电影加上中文字幕。

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15、

Blued offers free H.I.V. testing at clinics in Beijing, and the company has helped pay to fly same-sex couples to the United States to be married.

在北京的一些诊所里,Blued提供免费的HIV检测,该公司还帮助一些飞往美国结婚的同性情侣筹集了相关费用。

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16、

Obviously, there were some leaning color phenomena, like purple side, blued and so on.

显然,有一些倾向颜色的现象,如紫色,蓝色等等。

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17、

He created Blued, now China's most popular gay dating app with an estimated value of$ 600 million and more than three million active daily users, about as many as Grindr, a popular gay dating app in the United States.

他创办了Blued,眼下是中国最受欢迎的同性恋约会应用程序,估值为6亿美元,日活跃用户超过300万人——与美国广受欢迎的同性恋约会应用程序Grindr的用户数相当。

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18、

And the metal parts are all highly polished and blued to a deep, rich black color.

而金属零件都是高度抛光和发蓝到深,丰富的黑色。

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19、

Strip steel blued in this Process is claimed to be 99.7% up to the predicted standard.

按所述方法建立的工艺制度,生产的发兰带钢其预测性能的合格率可达99.7%。

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20、

Blued has more than 200000 hosts who broadcast around the clock on a variety of topics-music, dating, fitness and cooking.

Blued上逾20万名主播,会全天上传与音乐、约会、健身、烹饪等多种话题有关的内容。

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