A thread collecting method for easily and simply collecting a bagworm-derived pure silk thread from a bagworm with a small number of processes and a thread collecting device for implementing the thread collecting method are developed and provided. A device that collects a silk thread from a bagworm is provided, the device including: a container that accommodates the bagworm; and an in-and-out hole through which the bagworm is put in and taken out of the container. A width of a maximum short axis cross section of an inner space of the container is in a range from 1.2 times or more to less than 3.1 times relative to a maximum body width of the bagworm being accommodated.

A thread collecting method for easily and simply collecting a bagworm-derived pure silk thread from a bagworm with a small number of processes and a thread collecting device for implementing the thread collecting method are developed and provided. A device that collects a silk thread from a bagworm is provided, the device including: a container that accommodates the bagworm; and an in-and-out hole through which the bagworm is put in and taken out of the container. A width of a maximum short axis cross section of an inner space of the container is in a range from 1.2 times or more to less than 3.1 times relative to a maximum body width of the bagworm being accommodated.

The present disclosure provides a system and a method for automated extraction of silk fibroin from silk cocoons. The silk extraction system can include a boiling tank, a rinsing tank, and a rinse bowl attached to a robotic arm. The rinse bowl has a porous bottom surface adapted to retain an extracted silk fibroin. The robotic arm can move the rinse bowl between the boiling tank and the rinsing tank for separate stages of processing. A silk processing algorithm is executed by a processor to automate the process.

The present disclosure provides a system and a method for automated extraction of silk fibroin from silk cocoons. The silk extraction system can include a boiling tank, a rinsing tank, and a rinse bowl attached to a robotic arm. The rinse bowl has a porous bottom surface adapted to retain an extracted silk fibroin. The robotic arm can move the rinse bowl between the boiling tank and the rinsing tank for separate stages of processing. A silk processing algorithm is executed by a processor to automate the process.

Developed and provided is a method of collecting a large amount of high-quality bagworm silk threads having no contaminant from bagworm nests in a convenient manner and at low cost. The habit of bagworms is utilized to allow a bagworm to build a nest using solvent-soluble substances or thermally meltable substances as nest materials, followed by dissolving or melting the nest materials to separate the nest material from the bagworm silk threads, whereby only pure bagworm silk threads constituting the bagworm nest can be obtained.

Developed and provided is a method of collecting a large amount of high-quality bagworm silk threads having no contaminant from bagworm nests in a convenient manner and at low cost. The habit of bagworms is utilized to allow a bagworm to build a nest using solvent-soluble substances or thermally meltable substances as nest materials, followed by dissolving or melting the nest materials to separate the nest material from the bagworm silk threads, whereby only pure bagworm silk threads constituting the bagworm nest can be obtained.

A method of producing a transgenic silkworm that spins bagworm silks and producing a large quantity of bagworm silks by transgenic technology is developed and provided. A gene encoding a modified bagworm Fib H and a transgenic silkworm in which the gene is introduced, wherein the gene is obtained by cloning a gene fragment encoding a bagworm Fib H-like polypeptide comprising a partial amino acid sequence of bagworm Fib H, and fusing the gene fragment to a gene fragment encoding silkworm-derived Fib H, are provided.

Disclosed are a dental barrier membrane for guided bone regeneration using a silk matrix and a method of manufacturing the same, wherein the dental barrier membrane is configured such that a silk matrix having a cross-section with a first thickness, produced from silkworms, is subjected to planar division into two or more silk matrix pieces having a predetermined shape with the first thickness. This dental barrier membrane is biocompatible, has superior tensile strength and porosity, and promotes the formation of new bone in bone defects, unlike existing dental barrier membranes.

Disclosed are a molded body and method for manufacture of same, with the molded body including fibroin having high impact strength and flexural properties, the molded body being capable of maintaining impact strength and flexural properties over a long period of time, with the molded body including 80 parts or more by weight of fibroin, with the fibroin including fibrous fibroin and non-fibrous fibroin.

Disclosed are a molded body and method for manufacture of same, with the molded body including fibroin having high impact strength and flexural properties, the molded body being capable of maintaining impact strength and flexural properties over a long period of time, with the molded body including 80 parts or more by weight of fibroin, with the fibroin including fibrous fibroin and non-fibrous fibroin.