Xu Lingxiang, Wang Xiaoan, Li Qixiang, Niu Yuqing, Ding Guohui, He Jiawei, Chen Weiping, Tian Dagang
Academy for Advanced Interdisciplinary Studies, Plant Phenomics Research Center, College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China.
Fujian Laboratory for Rice Germplasm Innovation and Molecular Breeding, Biotechnology Research Institute, Institute of Crop Sciences, Fujian Academy of Agricultural Sciences, Fuzhou 350001, China.
Plants (Basel). 2024 Dec 23;13(24):3594. doi: 10.3390/plants13243594.
Germinated whole seeds possess elevated levels of bioactive nutrients; however, their application is hindered by several constraints. The germination process is typically time-consuming, and germinated seeds present challenges in terms of storage and transportation compared to dry seeds. This study introduces a novel processing method for rice, termed prolonged priming (PLP), aiming to combine the benefits of germinated and dry seeds. PLP involves soaking the seeds until the embryo exposure stage, followed by redrying. At 10 h (hour) germination post PLP, the γ-aminobutyric acid (GABA) levels in Hanyou73 (HY73) and IRAT exceeded 20 mg/100 g. Additionally, there was an induction of various nutrient components, including an increase in protein content, a reduction in amylose levels, and an elevation in fatty acid content, among others. Malondialdehyde levels, indicating oxidative damage, remained stable, and PLP preserved better seed integrity compared to routine priming in the desiccation-tolerant HY73. Collectively, the PLP treatment demonstrates an optimization of the nutritional value and storage in germinated brown rice (GBR). This novel process holds potential for enhancing the nutritional profile of GBR and may be applicable to other crop species.
发芽的全谷物种子含有更高水平的生物活性营养成分；然而，它们的应用受到多种限制。发芽过程通常耗时较长，而且与干种子相比，发芽种子在储存和运输方面存在挑战。本研究介绍了一种针对水稻的新型加工方法，称为延长引发（PLP），旨在结合发芽种子和干种子的优点。PLP包括将种子浸泡至胚暴露阶段，然后再干燥。在PLP处理后10小时发芽时，汉优73（HY73）和IRAT中的γ-氨基丁酸（GABA）含量超过20毫克/100克。此外，还诱导了各种营养成分，包括蛋白质含量增加、直链淀粉水平降低、脂肪酸含量升高等等。表明氧化损伤的丙二醛水平保持稳定，并且在耐干燥的HY73中，与常规引发相比，PLP能更好地保持种子完整性。总体而言，PLP处理证明了对发芽糙米（GBR）营养价值和储存的优化。这种新方法有可能改善GBR的营养状况，并且可能适用于其他作物品种。
