Figure 1.

Figure 2.

Figure 3.

Figure 4.
![[A] HPLC chromatogram and [B] amount of compound 1 of total extract and different fractions of M. fluvialis.](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/6471d13c215d2f6c89db1c80/j_fhort-2023-0026_fig_004.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=ASIA6AP2G7AKOEB6WTWL%2F20260221%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20260221T013223Z&X-Amz-Expires=3600&X-Amz-Security-Token=IQoJb3JpZ2luX2VjENj%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDGV1LWNlbnRyYWwtMSJGMEQCIDx8SuolTmC6tev%2FFSTPI3eOcLfNeRIBW5P0638OP%2Bj9AiAZ0M0erSbcmVRN6Ly8knn8c8q%2FGk%2BQdwlRYHE2rHPLoCrGBQih%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F8BEAIaDDk2MzEzNDI4OTk0MCIMDQXv1nUcYbB448dhKpoFZVY58Q4qhGf4OHPN1zzUGaTKcfSdeF2QssByoNrOKLWvG5Iwfpr7xxLkWpzjYb9EsdFfzfkZTrjd6C8Amnza7QcUr2PHCLetnmv%2FMM6wPIiuhwxPtvHFFVIGvbeg%2Bx1pNftkPoPiQiUNAOEmqpR%2FSN4byaa56J5uYjSrFJH6a53zlUC5snFLrZPDLy8WSR5fdOzhx3gOM2Fmz42H7hHrSnge9gSNDngCrn%2FAGzmrGMh%2FnT6Jm8aMA1YYPtR4vaYyHbZIstV5IA24EeLxhNz12vYAC%2FkUUTX%2BkuZDC%2Bb5CWVQ0sCW0cW731RlFbL%2BVXIpSxh%2FJv1RvWSenAMp17cYEwKUApDYUDom7D9vfjw9hNbfIf7tj80Int2h6WYEdvAbeBSN3vWclRslLCPVjjs0nrON0xMZ29%2Fb%2B9aIlijHtaOnLPdSgfdFZePqhthTeBhYCxnw1nLJ5DZ3EsVz6MPvRVv6tXubu6SucjYcfydrlWwHGNsIAHwdLwxIpoqLSBwMg%2FmIEVUadpYjjrTNPx3GJLNDP9dxt5SxxI1HAlFdkbfFSNYw07ru4ukX81gfCeFpfa3pjpuNwCIIylRGCVwW8Dhn9wnsR%2BjnVb8LZegJhluUKaORVHGskMYxsDH9%2BCSOn%2FBbeqP0gLEC%2FlQAAdp56ptAcczv6o7teB%2FKcLwaERU%2FJH03dVKiFUE5Ehs3IvFzksSdhTkUZgzAG%2BIgfsecY%2Fz1Nr3ztiwrOiuppux4SHzEdzwg60uhFuh3xfKcN5BUnq62sY1jWDvaxMer7vbDW%2Bwynk%2BwuD3o2M%2FBBIXXNcT1gNLtV1Feza6DQKVPT%2FsDKl2ISymeXKwGLD%2FX8lhtLTg10ABXCxcRA9B2HYm8t07aqbq1kUc546WSMIPi48wGOrIBpkXjhgW9LIGbMTGOuEQ8rQL7BkvU5zxKXYGwb3PQ5gmUWBkNjfSOvMYWk93XF02MT9OTFy5lzCJJk2e%2FmrUSd3SEOZVQmrKXEoJ1OmtObz1PJfKhyBFGtQuT0JHM%2F2KX%2Fx2GvckwSjfW7aHdDk%2BitbtogJEVcgRTMXHhlhLIauy2rE4wMj54yqMUdiiALxCTFBYKjdlYuUs1jrZF%2BZTAa5deTe8E2F9cvKddJCTho%2FaNwQ%3D%3D&X-Amz-Signature=1e76b8eee96932871583df67995796d4008ac4b954ed75d8868130adf5c6e5b8&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Supplementary Scheme S1.

Supplementary Figure S1.

Supplementary Figure S2.

Supplementary Figure S3.

Supplementary Figure S4.

Supplementary Figure S5.

Supplementary Figure S6.

α-Glucosidase inhibitory activity of compounds 1–6 from M_ fluvialis_
| Compound | α-Glucosidase inhibitory activity (100 μM) | IC50 (μM) |
|---|---|---|
| 1 | 89.2 ± 3.4 | 14.8 |
| 2 | 53.1 ± 6.3 | 95.2 |
| 3 | 32.8 ± 6.6 | >100 |
| 4 | 24.8 ± 6.5 | >100 |
| 5 | 21.9 ± 0.3 | >100 |
| 6 | 17.0 ± 0.3 | >100 |
| Acarbose* | 76.4 ± 3.4 | 72.5 |