| 杨冉冉,李文慧,李宝涛,刘一乐,隋文杰,李冬敏,王宁,司传领,王冠华.基于KOH梯度溶解的分级小分子木质素钾肥的制备及应用[J].中国造纸学报,2026,41(2):1-11 |
二维码（扫一下试试看！） |
| 基于KOH梯度溶解的分级小分子木质素钾肥的制备及应用 |
| Preparation and Application of Fractionated Small Molecular Lignin Potassium Fertilizer via KOH Gradient Dissolution |
| 投稿时间：2025-09-12 修订日期：2026-01-14 |
| DOI：10.11981/j.issn.1000-6842.2026.02.01 |
| 中文关键词: 黑液 木质素 分级 钾肥 盐胁迫 |
| Key Words:black liquor lignin fractionation potassium fertilizer salt stress |
| 基金项目:天津市自然科学基金重点项目（24JCZDJC00780）；非粮生物质能技术全国重点实验室开放基金（SKL-NFBET-2025-22）；“协同”行动计划（广西区域创新能力提升计划）（桂科XT2600870040）。 |
| 作者 | 单位 | 邮编 | | 杨冉冉* | 1天津科技大学轻工科学与工程学院,天津,300457 | 300457 | | 李文慧 | 1天津科技大学轻工科学与工程学院,天津,300457 | 300457 | | 李宝涛 | 1天津科技大学轻工科学与工程学院,天津,300457 | 300457 | | 刘一乐 | 1天津科技大学轻工科学与工程学院,天津,300457 | 300457 | | 隋文杰 | 2天津科技大学食品营养与安全国家重点实验室,天津,300457 | 300457 | | 李冬敏 | 3中粮营养健康研究院有限公司,北京,102209 | 102209 | | 王宁 | 4广西兰科资源再生利用有限公司,广西玉林,537000 | 537000 | | 司传领 | 1天津科技大学轻工科学与工程学院,天津,300457 | 300457 | | 王冠华* | 1天津科技大学轻工科学与工程学院,天津,300457 | 300457 |
|
| 摘要点击次数: 328 |
| 全文下载次数: 12 |
| 中文摘要: |
| 通过酸析法从黑液中提取木质素，采用KOH梯度溶解同步实现木质素分级与钾化，制备出高亲水基团含量的小分子木质素钾肥（LMWL-K），并应用于喜钾奶油生菜幼苗的培养。结果表明，由于小分子质量木质素（LMWL）中的酚羟基（2.98 mmol/g）与羧基（2.30 mmol/g）含量较高，其钾化产物LMWL-K中的钾含量达15.9%，显著高于全组分木质素钾肥（10.3%）。奶油生菜幼苗水培实验表明，在LMWL-K添加量150 mg/L下，处理效果最佳，与不添加钾肥的对照组相比，生物量积累显著提升，叶绿素a、叶绿素b、可溶性蛋白和可溶性糖含量分别提高了22.3%、48.9%、231%和40.5%。LMWL-K除作为钾源外，其中的LMWL组分可通过刺激根尖细胞分裂，促进根系发育，增强养分吸收，从而提高幼苗生物量，促进生长效果优于等钾量黄腐酸钾和无机钾肥。此外，LMWL-K能够调节渗透物质代谢、激活抗氧化酶系统，显著提高幼苗的耐盐性。 |
| Abstract: |
| Lignin was extracted from black liquor through acid precipitation， and a KOH gradient dissolution was employed to simultaneously achieve lignin fractionation and potassiumization， resulting in the synthesis of small molecular lignin potassium fertilizer (LMWL-K) with a high content of hydrophilic groups， which was subsequently applied in the cultivation of potassium-demanding butterhead lettuce seedlings. The results demonstrated that the small molecular lignin (LMWL) exhibited high contents of phenolic hydroxyl (2.98 mmol/g) and carboxyl groups (2.30 mmol/g). Consequently， LMWL-K achieved a potassium content of 15.9%， significantly higher than that of the full-spectrum lignin potassium fertilizer (10.3%). Hydroponic experiments on butterhead lettuce seedlings demonstrated that the optimal treatment efficacy was observed at an LMWL-K dosage of 150 mg/L. Compared with the control group without addition of potassium fertilizer application， LMWL-K significantly enhanced biomass accumulation， increasing the contents of chlorophyll a， chlorophyll b， soluble protein， and soluble sugar by 22.3%， 48.9%， 231%， and 40.5%， respectively. In addition to LMWL-K serving as a potassium source， the LMWL component in LMWL-K was found to stimulate root tip cell division， promote root development， and enhance nutrient uptake， thereby increasing seedling biomass. Its growth-promoting effects surpassed those of potassium humate and inorganic potassium fertilizers at equivalent potassium concentrations. Furthermore， LMWL-K was shown to regulate osmotic metabolism and activate the antioxidant enzyme system， thereby significantly enhancing the salt tolerance of the butterhead lettuce seedlings. |
| 查看全文 查看/发表评论 下载PDF阅读器 HTML |
|
|
|
